c++编写一个函数求长方体的体积，长方体的长、宽、高的默认值分别为30、20、10‘在主体函数中进行输入输出’

#include <stdio.h>

float volume(float length, float width, float height);

int main() {
float length = 30, width = 20, height = 10;
printf("请输入长方体的长、宽、高：");
scanf("%f %f %f", &length, &width, &height);
printf("长方体的体积为：%.2f\n", volume(length, width, height));
return 0;
}

float volume(float length, float width, float height) {
return length * width * height;
}