原理就不说了

代码:

#include <stdio.h>
int main()
{
    float score[5], sum = 0;
    int i;
    printf("请输入5名童鞋的成绩:\n");
    for (i = 0; i < 5; i = i + 1)
        scanf_s("%f", &score[i]);
    for (i = 0; i < 5; i = i + 1)
        sum = sum + score[i];

    printf("平均成绩为:%.1f\n", sum / 5);
    
}

 

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