include <stdio.h>int main(){ int a,b,n,i; printf("please enter two number ,like a,b\n"); scanf("%d,%d",&a,&b); if (a>b) n=b; else n=a; for(i=n ;i>0;i--){ // i>0，从小的数递减到1 if(b%i==0&&a%i==0) //原函数的...