c语言如何求最大公约数和最小公倍数？

 #include<stdio.h>
  int main()   /*  辗转相除法求最大公约数 */ 
 { 
   int m, n, a, b, t, c;
   printf("Input two integer numbers:\n");
    scanf("%d%d", &a, &b);
    m=a;   n=b;
  while(b!=0)  /* 余数不为0，继续相除，直到余数为0 */ 
   { c=a%b; a=b;  b=c;}
   printf("The largest common divisor:%d\n", a);
  printf("The least common multiple:%d\n", m*n/a);
 }

#include <stdio.h>
int main()
{ 
int a,b,A,B;
int lol,lpl;
printf ("输入两个整数：\n");  
scanf ("%d%d",&a,&b);
A=a;
B=b;
if(B)
while((A %= B) && (B %= A));
lol = A+B;
lpl = a*b/lol;
printf ("最小公倍数为：%d\n", lpl); 
return 0;
}