C语言程序设计教程（第三版）课后习题6.1 （C语言代码）

解题思路:





注意事项:





参考代码:

#include <stdio.h>

int main(void)

{

  int a,b,j;

  int common = 1;

  int i = 1;

  while((scanf("%d%d",&a,&b) != 2)||(a == 0)||(b == 0))

  {

    printf("the type of input is wrong\n");  

    printf("please input again!\n");

  }

  while((i <= a)&&(i <= b))

  {

    if((a%i == 0)&&(b%i == 0))

    {

      common = i;

    }

    i++;    

  }

  j=a*b/common;

  printf("%d %d\n",common,j);

  return 0;

}