#include <stdio.h>
int power(int a,int m);
void main()
{
    int a,m,b=4;
    printf("input a and m :");
    scanf(" %d %d",&a,&m);
    printf("a*b=%d\n",a*b);
    printf("a**m=%d\n",power(a,m));
}
int power(int a,int m) //幂次方函数
{
    int y =1;
    for(int i =1;i<4;i++)
    {
        y = y*a;
    }
    return y;
}