有一个小问题!希望帮忙看看!

#include <stdio.h>

void main(void)

{

double a,b,area,l;

a=3.14;

printf("please input the radius of the circle\n");

scanf("%lf",&b);

area = a * b * b;

l = 2 * a * b;

printf("the area of the cirlc = %lf\n", area);

printf("the l of the circle = %lf\n",l);

}

上面那段代码里有个void main(void)，我不明白的是为什么后面还要加上一个void呢?

加上了起了个什么作用!

[405 byte] By [msdn] at [2007-8-14 12:57:57]