#include<stdio.h> int gcdgcm(int a,int b,int *gcd,int *gcm) { int t,temp,k,g,f; if(a<b) { t=a; a=b; b=t; } k=a; g=b; while((temp=a%b)!=0) { a=b; b=temp; } f=k*g/b; *gcd=b; *gcm=f; return 0; } int main() { int x,y,da,xiao; wh...