不知道该怎么改啊，就是得不到

#include<stdio.h>
int main()
{
    int m,n,a,b,t,k;
    printf("2gezhengzhengshu:");
    scanf("%d,%d",&m,&n);
    if(m>n) t=n,k=m;
    else t=m,k=n;
    for(a=t;a>=1;a--)
    {
        if(m%a==0&&n%a==0) break;
        printf("yueshu:%d\n",a);
    }
    for(b=k;b>=k;b++)
    {
        if(b%m==0&&b%n==0) break;
        printf("yinshu:%d\n",b);
    }
    return 0;
}

要多用括号

#include<stdio.h>
int main()
{
    int m, n, a, b, t, k;
    printf("2gezhengzhengshu:");
    scanf("%d%d", &m, &n);
    if (m > n)
    {
        t = n, k = m;
    }
    else
    {
        t = m, k = n;
    }
    for (a = t; a >= 1; a--)
    {
        if (m%a == 0 && n%a == 0)
            break;        
    }
    printf("yueshu:%d\n", a);
    for (b = k; b >= k; b++)
    {
        if (b%m == 0 && b%n == 0)
            break;        
    }
    printf("yinshu:%d\n", b);
    return 0;
}

解决了，谢谢 ，  printf移到 {}   后面就好了