#include 
    
     using namespace std;//一般方法int pow1(int a, int b){    int t = a;    b--;    while(b--)        a *= t;    return a;}//普通快速幂int pow2(int a,int b){    int res = 1;    int base = a;    while(b > 0)    {        if(b % 2)            res *= base;        base *= base;        b /= 2;    }    return res;}//位运算快速幂int pow3(int a,int b){    int r = 1, base = a;    while(b != 0)    {        if(b & 1)            r *= base;        base *= base;        b >>= 1;    }    return r;}int main(){    int a, b;    while(printf("输入A^B中的A和B："), cin >> a >> b)    {        printf("C语言函数：%d\n", (int)pow(a, b));        printf("一般方法：%d\n", pow1(a, b));        printf("普通快速幂：%d\n", pow2(a, b));        printf("位运算快速幂：%d\n", pow3(a, b));        printf("\n");    }    return 0;}