C 语言实例 - 计算数组元素平均值
C 语言教程
· 2019-02-20 23:26:33
使用 for 循环迭代出输出元素，并将各个元素相加算出总和，再除于元素个数：
实例 1
#include <stdio.h>
int main() {
int array[10] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 0};
int sum, loop;
float avg;
sum = avg = 0;
for(loop = 0; loop < 10; loop++) {
sum = sum + array[loop];
}
avg = (float)sum / loop;
printf("平均值为 %.2f", avg);
return 0;
}
输出结果为：
平均值为 4.50
用户自定义输入：
实例 2
#include <stdio.h>
int main()
{
int n, i;
float num[100], sum = 0.0, average;
printf("输入元素个数: ");
scanf("%d", &n);
while (n > 100 || n <= 0)
{
printf("Error! 数字需要在1 到 100 之间。\n");
printf("再次输入: ");
scanf("%d", &n);
}
for(i = 0; i < n; ++i)
{
printf("%d. 输入数字: ", i+1);
scanf("%f", &num[i]);
sum += num[i];
}
average = sum / n;
printf("平均值 = %.2f", average);
return 0;
}
输出结果为：
输入元素个数: 4 1. 输入数字: 1 2. 输入数字: 2 3. 输入数字: 4 4. 输入数字: 8 平均值 = 3.75
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