求两个数相乘

#   include<stdio.h>
int product(int,int);
int main(void)
{
     int x,y,s;
     scanf("%d %d","&x,&y);
    
     s=product(x,y);
     printf("The multiple is:%d",s);
     return 0;
} 
int product(inta,intb)
{
     int mul;
     mul=a*b;
     return mul;
}