实验一part1.1 1.2

#include<stdio.h>
int main()
{
    printf("201983270526\n");
    printf("Hello Mars!");
    return ;

 } 

#include<stdio.h>
int product(int,int);
int main()
{
    int x, y, s;
    scanf("%d %d", &x, &y);
    s = product(x, y);
    printf("The mul is:%d", s);
    return ;
 }
 int product(int a,int b)
 {
     int mul;
     mul=a*b;
     return mul;
 }