cl.exe main.c /I xxxpath xx.lib xxx.lib xxxx.lib

#include <stdio.h>
#include <string.h>
void main()
{
int a,b,c;
printf("输入三条边：\n");//\n配合fflush使用才有效果
fflush( stdout );
printf("输入第1条边：\n");
scanf("%d",&a);
printf("输入第2条边：");
scanf("%d",&b);
printf("输入第3条边：");
scanf("%d",&c);
if(a+b>c && a+c>b && b+c>a) 
{
printf("可以构成三角形");

}
else
{
printf("不能构成三角形.\n");

}
}

cl.bat:
"C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.16.27023\bin\Hostx64\x64\cl.exe" main.c /I "C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.16.27023\include" /I "C:\Program Files (x86)\Windows Kits\10\Include\10.0.17763.0\ucrt" "C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.16.27023\lib\x64\libcmt.lib" "C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.16.27023\lib\x64\oldnames.lib" "c:\Program Files (x86)\Windows Kits\10\Lib\10.0.17763.0\um\x64\kernel32.Lib" "C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.16.27023\lib\x64\libvcruntime.lib" "c:\Program Files (x86)\Windows Kits\10\Lib\10.0.17763.0\ucrt\x64\libucrt.lib" "c:\Program Files (x86)\Windows Kits\10\Lib\10.0.17763.0\um\x64\Uuid.Lib"

cmd.exe