#include#include #include #include #include #include #include #include #include
#include #include #include "myLibrary.h"//头文件引用的较多,有一些和本程序无关using namespace std;const int M = 1000000;int main(int argc, char *argv[]){ int arr[M];//每100万进一位,每位最大999999 arr[0] = 1; int k, m, n, r, num = 1;//k保存单次计算乘积, m为底数(输入), n为幂数(输入), r进位, num为数组长度 cout << "请输入要计算的内容以空格分隔,例m n(计算m的n次幂)：" << endl; while(1) { cin >> m >> n; if(!cin.fail() && m > 0 && n > 0) break; cin.clear(); // 错误位重置 cin.sync(); // 清空缓存区 假设不加这个函数就死循环了 cout << "输入错误,请又一次输入：" << endl; } //计算 for(int i = 0; i < n; i++) { r = 0; for(int j = 0; j < num; j++) { k = arr[j] * m + r; arr[j] = k % M; r = k / M; } while(r > 0) { arr[num++] = r % M; r = r / M; } } //写文件 FILE *fp = fopen("D:\\resoult.txt", "w"); fprintf(fp, "计算%d的%d次幂\n", m, n); for(int i = num - 1; i >= 0; i--) { if(arr[i] < 100000 && arr[i] > 10000 && i != num -1) fprintf(fp, "%s", "0"); else if(arr[i] < 10000 && arr[i] > 1000 && i != num -1) fprintf(fp, "%s", "00"); else if(arr[i] < 1000 && arr[i] > 100 && i != num -1) fprintf(fp, "%s", "000"); else if(arr[i] < 100 && arr[i] > 10 && i != num -1) fprintf(fp, "%s", "0000"); else if(arr[i] < 10 && i != num -1) fprintf(fp, "%s", "00000"); fprintf(fp, "%d", arr[i]); } fclose(fp); system("pause"); return 0;}