编译后提示这个,请问是什么意思?

--------------------Configuration: lianxi - Win32 Debug--------------------Compiling...03.cLinking...03.obj : error LNK2005: _main already defined in 01.objDebug/lianxi.exe : fatal error LNK1169: one or more multiply defined symbols foundError executing link.exe.lianxi.exe - 2 error(s), 0 warning(s)我输入的程序如下：#include "stdio.h"main(){int a,b,c;a=3;b=5;c=a+b;printf("c=%d\n",c);}用的是vC++6.0。重启依旧如此。谢谢各位老师！ 收起