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2009年9月10日 星期四

C程式練習

int a[]={21, 23, 57, 13 ,17, 6};
float average;

average=?

74 則留言:

  1. #include <stdio.h>
    #include <stdlib.h>
    int main(int argc, char *argv[])
    {
      float  x=0;
      int a[6]={21,23,57,13,17,6};
      x=a[0]+a[1]+a[2]+a[3]+a[4]+a[5];
      printf("%f平均數:",x/6);
      system("PAUSE"); 
      return 0;
    }

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  2. #include<stdio.h>
    #include<stdlib.h>
    int main()
    {
        float x=0;
        int a[6]={21,23,57,13 ,17,6};
        x=a[0]+a[1]+a[2]+a[3]+a[4]+a[5];
        printf("%f",x/6);
        system("pause");
        return 0;
    }

    回覆刪除
  3. #include<stdio.h>
    #include<stdlib.h>
    int main()
    {
        float x=0;
        int a[6]={21,23,57,13 ,17,6};
        x=a[0]+a[1]+a[2]+a[3]+a[4]+a[5];
        printf("%f",x/6);
        system("pause");
        return 0;
    }

    回覆刪除
  4. #include<stdio.h>
    #include<stdlib.h>
    int main()
    {
        float x=0;
        int a[6]={21,23,57,13 ,17,6};
        x=a[0]+a[1]+a[2]+a[3]+a[4]+a[5];
        printf("%f",x/6);
        system("pause");
        return 0;
    }

    回覆刪除
  5. #include <stdio.h>
    #include <stdlib.h>
    int main()
    {
        float x=0;
        int a[]={21, 23, 57, 13 ,17, 6};
        x=a[0]+a[1]+a[2]+a[3]+a[4]+a[5];
        printf("%f平均數",x/6);
        system("pause");
        return 0;
    }

    回覆刪除
  6. #include<stdio.h>
    #include<stdlib.h>
    int main()
    {
        float x=0;
        int a[6]={21,23,57,13,17,6};
        x=a[0]+a[1]+a[2]+a[3]+a[4]+a[5];
        printf("%f",x/6);   
        system("pause");
        return 0;
    }

    回覆刪除
  7. #include <stdio.h>
    #include <stdlib.h>
    int main()
    {
        float x=0;
        int a[]={21, 23, 57, 13 ,17, 6};
        x=a[0]+a[1]+a[2]+a[3]+a[4]+a[5];
        printf("%f平均數",x/6);
        system("pause");
        return 0;
    }



    答案:22.833333

    回覆刪除
  8. #include <stdio.h>
    #include <stdlib.h>
    int main(int argc, char *argv[])
    {
      float  x=0;
      int a[6]={21,23,57,13,17,6};
      x=a[0]+a[1]+a[2]+a[3]+a[4]+a[5];
      printf("%f平均數:",x/6);
      system("PAUSE"); 
      return 0;
    }

    ANS:22.833333

    回覆刪除
  9. #include <stdio.h>
    #include <stdlib.h>
    int main()
    {
        float x=0;
        int a[]={21, 23, 57, 13 ,17, 6};
        x=a[0]+a[1]+a[2]+a[3]+a[4]+a[5];
        printf("%f平均數",x/6);
        system("pause");
        return 0;
    }



    答案:22.833333

    回覆刪除
  10. #include<stdio.h>
    #include<stdlib.h>
    int main()
    {
        float x=0;
        int a[6]={21,23,57,13,17,6};
        x=a[0]+a[1]+a[2]+a[3]+a[4]+a[5];
        printf("%f",x/6);   
        system("pause");
        return 0;
    }

    A:22.833333

    回覆刪除
  11. #include <stdio.h>
    #include <stdlib.h>
    int main()
    {
        float x=0;
        int a[6]={21,23,57,13,17,6};
        x=a[0]+a[1]+a[2]+a[3]+a[4]+a[5];
        printf("%f",x/6);
        system("pause");
        return 0;
    }

    回覆刪除
  12. #include <stdio.h>
    #include <stdlib.h>
    int main()
    {
        float x=0;
        int a[6]={21,23,57,13,17,6};
        x=a[0]+a[1]+a[2]+a[3]+a[4]+a[5];
        printf("%f",x/6);
        system("pause");
        return 0;
    }

    ANS:22.833

    回覆刪除
  13. #include <stdio.h>
    #include <stdlib.h>
    int main()
    {
     int a[]={21,23,57,13,17,6};
     int sum=0 ,i;
     float average;
           for(i=0;i<6;i++)
           sum+=a[i];
    average=(float)sum / 6;
    printf("average=%f",average);
    system("pause");
    return 0;
    }

    average=22.833334

    回覆刪除
  14. #include<stdio.h>
    #include<stdlib.h>
    int main()
    {
        float x=0;
        int a[6]={21,23,57,13 ,17,6};
        x=a[0]+a[1]+a[2]+a[3]+a[4]+a[5];
        printf("%f",x/6);
        system("pause");
        return 0;
    }

    回覆刪除
  15. #include<stdio.h>
    #include<stdlib.h>
    int main()
    {
        float x=0;
        int a[6]={21,23,57,13 ,17,6};
        x=a[0]+a[1]+a[2]+a[3]+a[4]+a[5];
        printf("%f",x/6);
        system("pause");
        return 0;
    }

    回覆刪除
  16. #include <stdio.h>
    #include <stdlib.h>
    int main()
    {
     int a[]={21,23,57,13,17,6};
     int sum=0;
     float average=0;
     {
         for(int i=0;i<6;i++)
                         sum=sum+a[i];
     }
     average=sum/6.0;
     printf("%f",average);
     system("pause");
     return 0;
           
    }



    average=22.83334

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  17. #include<stdio.h>
    #include<stdlib.h>
    int main()
    {
        float x=0;
        int a[6]={21,23,57,13 ,17,6};
        x=a[0]+a[1]+a[2]+a[3]+a[4]+a[5];
        printf("%f",x/6);
        system("pause");
        return 0;
    }

    回覆刪除
  18. #include<stdio.h>
    #include<stdlib.h>
    int main()
    {
        float x=0;
        int a[6]={21,23,57,13 ,17,6};
        x=a[0]+a[1]+a[2]+a[3]+a[4]+a[5];
        printf("%f",x/6);
        system("pause");
        return 0;
    }

    回覆刪除
  19. #include <stdio.h>
    #include <stdlib.h>
    int main()
    {
        float x=0;
        int a[6]={21,23,57,13,17,6};
        x=a[0]+a[1]+a[2]+a[3]+a[4]+a[5];
        printf("%f",x/6);
        system("pause");
        return 0;
    }

    答案:22.833333

    回覆刪除
  20. #include <stdio.h>
    #include <stdlib.h>
    int main()
    {
    int t[6]={21,23,57,13,17,6};
    int c[1]={5};
    int i,sum=0;
    float average;
    for (i=0;i<6;i++)
    sum=sum+t[i]*c[1];
    int x=0;
    for (i=0;i<6;i++)
    x=x+c[1] ;
    average=(float)sum/x;
    printf("average=%f\n",average);

    system("Pause");
    return 0;
    }

    回覆刪除
  21. #include <stdio.h>
    #include <stdlib.h>
    int main()
    {
        float x=0;
        int a[6]={21,23,57,13,17,6};
        x=a[0]+a[1]+a[2]+a[3]+a[4]+a[5];
        printf("%f",x/6);
        system("pause");
        return 0;
    }


    答:22.833333

    回覆刪除
  22. #include <stdio.h>
    #include <stdlib.h>
    int main()
    {
        float x=0;
        int a[6]={21,23,57,13,17,6};
        x=a[0]+a[1]+a[2]+a[3]+a[4]+a[5];
        printf("%f",x/6);
        system("pause");
        return 0;
    }


    答:22.833333

    回覆刪除
  23. #include <iostream>
    #include <cstdlib>
    using namespace std;
    int main()
    {
        int a[6]={21, 23, 57, 13 ,17, 6};
        int sum = 0;
        float average;
        int i;
        for (i=0; i<6; i++)
           sum += a[i];
        average= (float)sum /6;
        cout<<"平均:"<<average<<endl;
        system("pause");
        return 0;
    }

    回覆刪除
  24. #include <iostream>
    #include <cstdlib>
    using namespace std;
    int main()
    {
        int a[6]={21, 23, 57, 13 ,17, 6};
        int sum = 0;
        float average;
        int i;
        for (i=0; i<6; i++)
           sum += a[i];
        average= (float)sum /6;
        cout<<"平均:"<<average<<endl;
        system("pause");
        return 0;
    }

    回覆刪除
  25. #include <iostream>
    #include <cstdlib>
    using namespace std;
    int main()
    {
        int a[6]={21,23,57,13,17,6};
        int sum=0;
        float average;
        int i;
        for(i=0;i<6;i++)
            sum+=a[i];
        average=(float)sum/6;
        cout<<"平均:"<<average<<endl;
        system("Pause");
        return 0;
    }

    回覆刪除
  26. #include <iostream>
    #include <cstdlib>
    using namespace std;
    int main()
    {
        int a[6]={21, 23, 57, 13 ,17, 6};
        int sum = 0;
        float average;
        int i;
        for (i=0; i<6; i++)
           sum += a[i];
        average= (float)sum /6;
        cout<<"平均:"<<average<<endl;
        system("pause");
        return 0;
    }

    回覆刪除
  27. #include <stdio.h>
    #include <stdlib.h>
    int main()
    {
    int t[6]={21,23,57,13,17,6};
    int c[1]={5};
    int i,sum=0;
    float average;
    for (i=0;i<6;i++)
    sum=sum+t[i]*c[1];
    int x=0;
    for (i=0;i<6;i++)
    x=x+c[1] ;
    average=(float)sum/x;
    printf("average=%f\n",average);

    system("Pause");
    return 0;
    }
    ans:22.833333

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  28. #include<stdio.h>
    #include<stdlib.h>
    int main()
    {
        int a[6]={21,23,57,13,17,6};
        int i,sum = 0;
        float average;
         for (i=0; i<6; i++)
         {
           sum= sum+a[i];
         }
           average=(float)sum/6;
        printf("ave=%5.2f\n",average);
        system("pause");
        return 0;
    }
     

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  29. #include<stdio.h>
    #include<stdlib.h>
    int main()
    {
        int a[6]={21,23,57,13,17,6};
        int i,sum = 0;
        float average;
         for (i=0; i<6; i++)
         {
           sum= sum+a[i];
         }
           average=(float)sum/6;
        printf("ave=%5.2f\n",average);
        system("pause");
        return 0;
    }
     

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  30. #include <stdio.h>
    #include <stdlib.h>
    int main()
    {
        int a[]={21 , 23 , 57 , 13 , 17 , 6};
        int i,sum=0;
        float y;
        for(i=0;i<=5;i++)
        {
            sum=sum+a[i];
        }
        y=(float)sum/6;
        printf("average=%f\n",y);
        system("pause");
        return 0;
    }

    回覆刪除
  31. #include<stdio.h>
    #include<stdlib.h>
    int main()
    {
        int a[6]={21,23,57,13,17,6};
        int i,sum = 0;
        float average;
         for (i=0; i<6; i++)
         {
           sum= sum+a[i];
         }
           average=(float)sum/6;
        printf("ave=%5.2f\n",average);
        system("pause");
        return 0;
    }
     

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  32. #include<stdio.h>
    #include<stdlib.h>
    int main()
    {
        int a[6]={21,23,57,13,17,6};
        int i,sum = 0;
        float average;
         for (i=0; i<6; i++)
         {
           sum= sum+a[i];
         }
           average=(float)sum/6;
        printf("ave=%5.2f\n",average);
        system("pause");
        return 0;
    }
     

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  33. #include<stdio.h>
    #include<stdlib.h>
    int main()
    {
        int a[6]={21,23,57,13,17,6};
        int i,sum = 0;
        float average;
         for (i=0; i<6; i++)
         {
           sum= sum+a[i];
         }
           average=(float)sum/6;
        printf("ave=%5.2f\n",average);
        system("pause");
        return 0;
    }
     

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  34. #include<stdio.h>
    #include<stdlib.h>
    int main()
    {
        int a[6]={21,23,57,13,17,6};
        int i,sum=0;
        float average;
        for (i=0;i<6;i++)
         sum=sum+a[i];
        average=(float)sum/6;
        printf("平均:%f\n",average);
        system("pause");
        return 0;
    }




    答案:22.833334

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  35. #include<stdio.h>
    #include<stdlib.h>
    int main()
    {
        int a[6]={21,23,57,13,17,6};
        int i,sum = 0;
        float average;
         for (i=0; i<6; i++)
         {
           sum= sum+a[i];
         }
           average=(float)sum/6;
        printf("ave=%5.2f\n",average);
        system("pause");
        return 0;
    }
     

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  36. #include <stdio.h>
    #include <stdlib.h>
    int main()
    {
        int a[]={21,23,57,13,17,6};
        int i,sum=0;
        float y;
        for(i=0;i<=5;i++)
        {
            sum=sum+a[i];
        }
        y=(float)sum/6;
        printf("average=%f",y);
        system("pause");
        return 0;
    }

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  37. #include <iostream>
    #include <cstdlib>
    using namespace std;
    int main()
    {
        int a[6]={21, 23, 57, 13 ,17, 6};
        int sum = 0;
        float average;
        int i;
        for (i=0; i<6; i++)
           sum += a[i];
        average= (float)sum /6;
        cout<<"平均:"<<average<<endl;
        system("pause");
        return 0;
    }

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  38. #include<stdio.h>
    #include<stdlib.h>
    int main()
    {
        int a[6]={21,23,57,13,17,6};
        int i,sum = 0;
        float average;
         for (i=0; i<6; i++)
         {
           sum= sum+a[i];
         }
           average=(float)sum/6;
        printf("ave=%5.2f\n",average);
        system("pause");
        return 0;
    }
     

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  39. #include<stdio.h>
    #include<stdlib.h>
    int main()
    {
        int a[6]={21,23,57,13,17,6};
        int i,sum = 0;
        float average;
         for (i=0; i<6; i++)
         {
           sum= sum+a[i];
         }
           average=(float)sum/6;
        printf("ave=%5.2f\n",average);
        system("pause");
        return 0;
    }
     

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  40. #include<stdio.h>
    #include<stdlib.h>
    int main()
    {
        int a[6]={21,23,57,13,17,6};
        int i,sum = 0;
        float average;
         for (i=0; i<6; i++)
         {
           sum= sum+a[i];
         }
           average=(float)sum/6;
        printf("ave=%5.2f\n",average);
        system("pause");
        return 0;
    }
     

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  41. #include<stdio.h>
    #include<stdlib.h>
    int main()
    {
        int a[6]={21,23,57,13,17,6};
        int i,sum = 0;
        float average;
         for (i=0; i<6; i++)
         {
           sum= sum+a[i];
         }
           average=(float)sum/6;
        printf("ave=%5.2f\n",average);
        system("pause");
        return 0;
    }
     

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  42. #include<stdio.h>
    #include<stdlib.h>
    int main()
    {
        int a[6]={21,23,57,13,17,6};
        int i,sum = 0;
        float average;
         for (i=0; i<6; i++)
         {
           sum= sum+a[i];
         }
           average=(float)sum/6;
        printf("ave=%5.2f\n",average);
        system("pause");
        return 0;
    }
     

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  43. #include<stdio.h>
    #include<stdlib.h>
    int main()
    {
        int a[6]={21,23,57,13,17,6};
        int i,sum = 0;
        float average;
         for (i=0; i<6; i++)
         {
           sum= sum+a[i];
         }
           average=(float)sum/6;
        printf("ave=%5.2f\n",average);
        system("pause");
        return 0;
    }
     

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  44. #include<stdio.h>
    #include<stdlib.h>
    int main()
    {
        int a[6]={21,23,57,13,17,6};
        int i,sum = 0;
        float average;
         for (i=0; i<6; i++)
         {
           sum= sum+a[i];
         }
           average=(float)sum/6;
        printf("ave=%5.2f\n",average);
        system("pause");
        return 0;
    }
     

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  45. #include <iostream>
    #include <cstdlib>
    using namespace std;
    int main()
    {
       int a[6]={21,23,57,13,17,6};
       int sum=0;
       float average;
       int i;
       for(i=0;i<6;i++)
            sum+=a[i];
       average=(float)sum/6;
       cout<<"平均:"<<average<<endl;
       system("pause");
       return 0;
    }

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  46. #include<stdio.h>
    #include<stdlib.h>
    int main()
    {
        int a[6]={21,23,57,13,17,6};
        int i,sum = 0;
        float average;
         for (i=0; i<6; i++)
         {
           sum= sum+a[i];
         }
           average=(float)sum/6;
        printf("ave=%5.2f\n",average);
        system("pause");
        return 0;
    }
     

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  47. #include<stdio.h>
    #include<stdlib.h>
    int main()
    {
        int a[6]={21,23,57,13,17,6};
        int i,sum = 0;
        float average;
         for (i=0; i<6; i++)
         {
           sum= sum+a[i];
         }
           average=(float)sum/6;
        printf("ave=%5.2f\n",average);
        system("pause");
        return 0;
    }
     

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  48. #include<stdio.h>
    #include<stdlib.h>
    int main()
    {
        int a[6]={21, 23, 57, 13 ,17, 6};
        int i,sum=0;
        float average;
        for (i=0; i<6; i++)
        {
           sum=sum+a[i];
           }
           average=(float)sum/6;
        printf("average:%5.2f\n",average);
        system("pause");
        return 0;
        }

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  49. #include <stdio.h>
    #include <stdlib.h>
    int main()
    {
        float x=0;
        int a[6]={21,23,57,13,17,6};
        x=a[0]+a[1]+a[2]+a[3]+a[4]+a[5];
        printf("平均數%f",x/6);
        system("pause");
        return 0;

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  50. #include<stdio.h>
    #include<stdlib.h>
    int main()
    {
        float x=0;
        int a[6]={21,23,57,13 ,17,6};
        x=a[0]+a[1]+a[2]+a[3]+a[4]+a[5];
        printf("%f",x/6);
        system("pause");
        return 0;
    }

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  51. #include<stdio.h>
    #include<stdlib.h>
    int main()
    {
    int a[6]={21,23,57,13,17,6};
    int i,sum = 0;
    float average;
    for (i=0; i<6; i++)
    {
    sum= sum+a[i];
    }
    average=(float)sum/6;
    printf("ave=%5.2f\n",average);
    system("pause");
    return 0;
    }

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  52. #include<stdio.h>
    #include<stdlib.h>
    int main()
    {
       float x=0;
       int a[6]={21,23,57,13,17,6};
       x=a[0]+a[1]+a[2]+a[3]+a[4]+a[5];
       printf("%f平均數:",x/6);
       system("pause");
       return 0;
    }

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  53. #include<stdio.h>
    #include<stdlib.h>
    int main()
    {
    int a[6]={21,23,57,13,17,6};
    int i,sum = 0;
    float average;
    for (i=0; i<6; i++)
    {
    sum= sum+a[i];
    }
    average=(float)sum/6;
    printf("ave=%5.2f\n",average);
    system("pause");
    return 0;
    }

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  54. #include<stdio.h>
    #include<stdlib.h>
    int main()
    {
    int a[6]={21,23,57,13,17,6};
    int i,sum = 0;
    float average;
    for (i=0; i<6; i++)
    {
    sum= sum+a[i];
    }
    average=(float)sum/6;
    printf("ave=%5.2f\n",average);
    system("pause");
    return 0;
    }

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  55. #include <stdio.h>
    #include <stdlib.h>
    int main(int argc, char *argv[])
    {
    int a[6]={21,23,57,13,17,6};
    int sum=0;
    float average;
    int i;
    for(i=0;i<6;i++)
    sum+=a[i];
    average = sum / 6.;
    printf("平均:%f\n",average);
    system("PAUSE");
    return 0;
    }

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  56. #include<stdio.h>
    #include<stdlib.h>
    int main()
    {
    int a[6]={21,23,57,13,17,6};
    int i,sum = 0;
    float average;
    for (i=0; i<6; i++)
    {
    sum= sum+a[i];
    }
    average=(float)sum/6;
    printf("ave=%5.2f\n",average);
    system("pause");
    return 0;
    }

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  57. #include <stdio.h>
    #include <stdlib.h>

    int main(int argc, char *argv[])
    {
    float average ;
    int a[]={21, 23, 57, 13 ,17, 6};


    int i = 0 ;
    int sum = 0 ;

    while ( i < 6 ) {
    sum = sum + a[i] ;
    i++ ;
    }

    average = sum / 6. ;

    printf ( "%f\n", average ) ;
    system("PAUSE");
    return 0;
    }

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  58. #include <stdio.h>
    #include <stdlib.h>
    int main()
    {
    int a[]={21, 23, 57, 13 ,17, 6};
    int i,sum=0;
    float average;
    for(i=0; i<6; i++)
    {
    sum=sum+a[i];
    }
    average=(float)sum/6;
    printf("average:%5.2f\n",average);
    system("pause");
    return 0;
    }

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  59. #include <iostream>
    #include <cstdlib>
    using namespace std;
    int main()
    {
        int a[6]={21,23,57,13,17,6};
        int sum=0;
        float average;
        int i;
        for(i=0;i<6;i++)
        sum+=a[i];
        average=(float)sum/6;
        cout<<"平均:"<<average<<endl;
        system("pause");
        return 0;
    }

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  60. #include<stdio.h>
    #include<stdlib.h>
    int main()
    {
        float x=0;
        int a[6]={21, 23, 57, 13 ,17, 6};
        x=a[0]+a[1]+a[2]+a[3]+a[4]+a[5];
        printf("%f平均數:",x/6);
        system("pause");
         return 0;
    }

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  61. #include<stdio.h>
    #include<stdlib.h>
    int main()
    {
        float x=0;
        int a[6]={21, 23, 57, 13 ,17, 6};
        x=a[0]+a[1]+a[2]+a[3]+a[4]+a[5];
        printf("%f平均數:",x/6);
        system("pause");
         return 0;
    }

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  62. #include <stdio.h>
    #include <stdlib.h>
    int main(int argc, char *argv[])
    {
      int a[]={21,23,57,13,17,6};
      int i;
      float sum=0;
      for(i=0;i<=5;i++)
      {
       sum+=a[i];
      }
      printf("%f\n",sum/6);
      system("PAUSE"); 
      return 0;
    }

    ans:22.833333

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  63. #include <cstdlib>
    #include <iostream>

    using namespace std;

    int main(int argc, char *argv[])
    {
    int a[]={21, 23, 57, 13 ,17, 6};
    float sum=0;
    float average;
    for(int i=0;i<6;i++)
    {
    sum=sum+a[i];
    };
    average=sum/6;
    cout<<average;
    system("PAUSE");
    return EXIT_SUCCESS;
    }

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  64. #include <iostream>
    #include <cstdlib>
    using namespace std;
    int main()
    {
        int a[6]={21, 23, 57, 13 ,17, 6};
        int sum = 0;
        float average;
        int i;
        for (i=0; i<6; i++)
           sum += a[i];
        average= (float)sum /6;
        cout<<"平均:"<<average<<endl;
        system("pause");
        return 0;
    }

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  65. #include <iostream>
    #include <cstdlib>
    using namespace std;
    int main()
    {
        int a[6]={21, 23, 57, 13 ,17, 6};
        int sum = 0;
        float average;
        int i;
        for (i=0; i<6; i++)
           sum += a[i];
        average= (float)sum /6;
        cout<<"平均:"<<average<<endl;
        system("pause");
        return 0;
    }

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  66. #include <iostream>
    #include <cstdlib>
    using namespace std;
    int main()
    {
        int a[6]={21, 23, 57, 13 ,17, 6};
        int sum = 0;
        float average;
        int i;
        for (i=0; i<6; i++)
           sum += a[i];
        average= (float)sum /6;
        cout<<"平均:"<<average<<endl;
        system("pause");
        return 0;
    }

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  67. #include <iostream>
    #include <cstdlib>
    using namespace std;
    int main()
    {
        int a[6]={21, 23, 57, 13 ,17, 6};
        int sum = 0;
        float average;
        int i;
        for (i=0; i<6; i++)
           sum += a[i];
        average= (float)sum /6;
        cout<<"平均:"<<average<<endl;
        system("pause");
        return 0;
    }

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  68. #include <stdio.h>
    #include <stdlib.h>
    int main(int argc, char *argv[])
    {
      float  x=0;
      int a[6]={21,23,57,13,17,6};
      x=a[0]+a[1]+a[2]+a[3]+a[4]+a[5];
      printf("%f平均數:",x/6);
      system("PAUSE"); 
      return 0;
    }

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  69. #include
    #include
    int main(int argc, char *argv[])
    {
    float x=0;
    int a[6]={21,23,57,13,17,6};
    x=a[0]+a[1]+a[2]+a[3]+a[4]+a[5];
    printf("%f平均數:",x/6);
    system("PAUSE");
    return 0;
    }

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  70. #include<stdio.h>
    #include<stdlib.h>
    int main()
    {
        float x=0;
        int a[6]={21,23,57,13 ,17,6};
        x=a[0]+a[1]+a[2]+a[3]+a[4]+a[5];
        printf("%f",x/6);
        system("pause");
        return 0;
    }

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  71. #include <stdio.h>
    #include <stdlib.h>
    int main()
    {
        float x=0;
        int a[]={21, 23, 57, 13 ,17, 6};
        x=a[0]+a[1]+a[2]+a[3]+a[4]+a[5];
        printf("%f平均數",x/6);
        system("pause");
        return 0;
    }

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  72. #include <stdio.h>
    #include <stdlib.h>
    int main(int argc, char *argv[])
    {
      float  x=0;
      int a[6]={21,23,57,13,17,6};
      x=a[0]+a[1]+a[2]+a[3]+a[4]+a[5];
      printf("%f平均數:",x/6);
      system("PAUSE"); 
      return 0;
    }

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  73. #include <stdio.h>
    #include <stdlib.h>
    int main(int argc, char *argv[])
    {
      float  x=0;
      int a[6]={21,23,57,13,17,6};
      x=a[0]+a[1]+a[2]+a[3]+a[4]+a[5];
      printf("%f平均數:",x/6);
      system("PAUSE"); 
      return 0;
    }

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  74. #include <iostream>
    #include <cstdlib>
    using namespace std;
    int main()
    {
    int a[6]={21, 23, 57, 13 ,17, 6};
    int sum = 0;
    float average;
    int i;
    for (i=0; i<6; i++)
    sum += a[i];
    average= (float)sum /6;
    cout<<"平均:"<<average<<endl;
    system("pause");
    return 0;
    }

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