/* Note:Your choice is C IDE */
#include "stdio.h"
main()
{
int a,b,c,d;
scanf("%d%d\n",&a,&b);
for(c=1;c<=a&&c<=b;c=c+1)
{if (a%c==0&&b%c==0) d=c;}
printf("%d",d);
}

还是不行啊

可是输入参数　输出结果却是１，比如１０和５

还是老毛病