C语言计算梯形面积：代码示例

#include <stdio.h>

int main()
{
    float upper, lower, height, area;
    printf('请输入梯形的上底、下底和高：');
    scanf('%f%f%f', &upper, &lower, &height);
    area = (upper + lower) * height / 2;
    printf('梯形的面积为：%.2f\n', area);
    return 0;
}