简单随机数研究-双色球

#include <stdio.h>#include <time.h>#include <vector>using namespace std;#ifndef _countof#define _countof(array) (sizeof(array)/sizeof(*array))#endifvector <int> Redball;vector <int> Blueball;int nSelectBalls[7];static int nRedballs[] ={1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18,19, 20, 21, 22, 23, 24, 25, 26,27, 28, 29, 30, 31, 32, 33};static int nBlueballs[] ={1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16};int MSRand(){memset(nSelectBalls, 0, sizeof(nSelectBalls));Redball.clear();Blueball.clear();for (int i = 0; i < _countof(nRedballs); i++){Redball.push_back(nRedballs[i]);}for (int j = 0; j < _countof(nBlueballs); j++){Blueball.push_back(nBlueballs[j]);}// 选红球for (i = 0; i < 6; i++){// 随机挑选一个位置int nIndex = rand() % (33 - i);nSelectBalls[i] = Redball.at(nIndex);vector<int>::iterator it = Redball.begin();for (it = Redball.begin(); it != Redball.end(); ++it){if (*it == nSelectBalls[i]){it = Redball.erase(it);break;}}}// 选蓝球nSelectBalls[6] = nBlueballs[rand() % 16];return 0;}int main(int argc, char* argv[]){char accept[256];srand(time(0)); // 随机种子while (1){int nNoteCount = 0;memset(accept, 0, sizeof(accept));printf("中国福利彩票<双色球>/n");printf("[1]机选号码/n");printf("[2]退出/n");printf("请输入您的选择[1-2]:");gets(accept);switch (accept[0]){case '1':{printf("请您输入机选的注数:");scanf("%d", &nNoteCount);getchar();for (int i = 0; i < nNoteCount; i++){MSRand();for (int j = 0; j < 7; j++){printf("%02d/t", nSelectBalls[j]);}printf("/n");}}break;case '2':{exit(0);}break;}};return 0;}

 

效果图: