一、运行结果；

二、源代码；

# define _CRT_SECURE_NO_WARNINGS
# include <stdio.h>//声明函数；
//最大公约数；
int greatdivisor(int x, int y);//最小公倍数；
int leastmultiple(int x, int y);int main()
{//初始化变量值；int number1 = 0;int number2 = 0;int divisor = 0;int multiple = 0;//获取变量值；printf("请输入两个整数：");scanf("%d %d", &number1, &number2);//调用最大公约数函数；divisor = greatdivisor(number1, number2);//调用最小公倍数函数；multiple = leastmultiple(number1, number2);//输出结果；printf("%d和%d的最大公约数为：%d，最小公倍数为：%d\n", number1, number2, divisor, multiple);return 0;
}//实现最大公约数函数；
int greatdivisor(int x, int y)
{//初始化变量值；int interchange = 0;int result = 1;//判断；if (x < y){//交换位置；interchange = x;x = y;y = interchange;}//运算；result = x % y;//循环运算；while (result != 0){//替换；x = y;y = result;//取余；result = x % y;}//返回值；return y;
}//实现最小公倍数函数；
int leastmultiple(int x, int y)
{//初始化变量值；int result = 1;int interchange = 0;int m, n;//赋值；m = x;n = y;//判断；if (x < y){//交换；interchange = x;x = y;y = interchange;}//运算；result = x % y;//循环运算；while (result != 0){//交换；x = y;y = result;//取余；result = x % y;}//运算；m = m / y;n = n / y;y = m * n * y;//返回值；return y;
}