How to calculate the average value of n numbers input in the C language.

To calculate the average of n numbers, first prompt the user to input n numbers, then add them up, and finally divide by n to get the average.

Here’s an example code:

#include <stdio.h>

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

    printf("请输入要求平均值的数字个数：");
    scanf("%d", &n);

    printf("请输入%d个数字：\n", n);
    for (i = 0; i < n; i++) {
        float num;
        scanf("%f", &num);
        sum += num;
    }

    average = sum / n;
    printf("平均值为：%.2f\n", average);

    return 0;
}

In the code, first obtain the input n from the user using scanf, then enter a loop where each time the loop runs, it will use scanf to get a number input from the user and add it to the variable sum. After the loop ends, divide sum by n to get the average value, and then print the result.