c - 在 C 编程中使用数组、循环和条件

Question

我试图解决的问题:

• 向用户询问五个数字并将其存储在一个数组中。
• 确定输入的最大数字和数组的平均值
• 将使用 for 循环来解决此问题。

我为解决这个问题而编写的代码，但我不知道为什么会这样不工作。有人可以告诉我我做错了什么吗？

#include <stdio.h>

  int main()
   {
     int i, n;
     float arr[5], sum = 0, average;

     printf("Please enter five numbers, separated by spaces!\n");
     scanf("%d", &n);

     //Stores numbers entered into an array
     for(i = 0; i < n; i++)
     {
        printf("%d: ", i++);
        scanf("%d", &arr[0]);


        for(i = 1; i < n; i++)
        {
            if(arr[0] < arr[i])
                arr[0] = arr[i];
        }
        printf("The highest of the five numbers is %d\n", arr[0]);

        for(i = 0; i < n; i++)
        {
            printf("%d. Enter number: ", i+1);
            scanf("%f", &arr[i]);
            sum += arr[i];
        }

        average = sum / n;
        printf("The average of the five numbers is %f\n", average);
      }
    }    

Answer 1

#include <stdio.h>

  int main()
   {
     int i, n;
     float sum = 0, average;

     printf("Please enter five numbers, separated by spaces!\n");
     scanf("%d", &n);

     float arr[n];

     // no need to do i++ inside
     //instead of saving all the values in arr[0], save it in arr[i]
     //for loop needs to be closed here itself,which you had not done
     for(i = 0; i < n; i++)
     {
       // printf("%d: ", i++); //no need to do this
        scanf("%f", &arr[i]);
     }
    //initialize a max variable equal to first element of array
     float max=arr[0];

      //compare the max element with rest of the elements of the array and update it as you get any greater element than it
        for(i = 1; i < n; i++)
        {
            if(max < arr[i])
                max = arr[i];
        }

        //use %f format specifier for float
        printf("The highest of the five numbers is %f\n", max);

        for(i = 0; i < n; i++)
        {
            //no need to do here what u did since the value is already stored in array
    //this for loop sums all the values present in array
            sum += arr[i];
        }

       //takes out average and prints it
        average = sum / n;
        printf("The average of the five numbers is %f\n", average);

    }    

我已经在评论中指出了你的错误。希望有帮助!