#includeint main() { long m,n,c,r; printf("请输入正整数m,n:"); scanf("%ld,%ld",&m,&n); if(m c = m; m = n; n = c; } r = m%n; while(r!=0){ m = n; n = r; r = m%n; } printf("%d",n); return 0; }

#includeint main() { long m,n,c,r; printf("请输入正整数m,n:"); scanf("%ld,%ld",&m,&n); if(m c = m; m = n; n = c; } r = m%n; while(r!=0){ m = n; n = r; r = m%n; } printf("%d",n); return 0; }