请教Linux下的GUI程序设计的问题

#include<stdioh>
//#include"luoyan2c"
void main()
{
int m,n,x,y;
int gongyueshu(int m,int n);
int gongbeishu(int m,int n);
printf("请输入两个数:");
scanf("%d,%d",&m,&n);
x=gongyueshu(m,n);
y=gongbeishu(m,n);
printf("公约数是:%d\n",x);
printf("公倍数是:%d\n",y);
}
#include<stdioh>

int gongyueshu(int m,int n)
{

int r;
if(n%m==0) r=m;
else if(m%n==0) r=n;
else r=1;
return(r);
}
int gongbeishu(int m,int n)
{
int p;
if(n%m==0) p=n;
else if(m%n==0) p=m;
else p=nm;
return(p);

}

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