#include<stdio.h>                    /*求最大公约数和最小公倍数*/
void mian()
{
    int m,n,m1,n1,a;
    printf("输入两个正整数:");
    scanf("%d%d",&m,&n);            /*把两个数存在内存中*/
    m1=m;n1=n;                        /*这样做目的为了保存m，n的值*/
    a=m1%n1;
    while(a!=0)
    {
        m1=n1;
        n1=a;
        a=m1%n1;
    }
    printf("最大公约数=%d\n",n1);
    printf("最小公倍数=%d\n",m*n/n1);
}
--------------------Configuration: for循环01 - Win32 Debug--------------------
Linking...
LIBCD.lib(crt0.obj) : error LNK2001: unresolved external symbol _main
Debug/for循环01.exe : fatal error LNK1120: 1 unresolved externals
Error executing link.exe.

for循环01.exe - 2 error(s), 0 warning(s)