#if 1  #include <stdlib.h>  #include <stdio.h>  #include <time.h>  #include <iostream>  #include <fstream>  using namespace std;  int main()  {      int nRandNumber[10];      for (int idx = 0; idx < 10; ++idx)      {          nRandNumber[idx] = rand();//取随机数范围为integer 0 ~ RAND_MAX(32767)          cout << nRandNumber[idx] << endl;      }      for (int idx = 0; idx < 10; ++idx)      {          nRandNumber[idx] = (double)rand() / (RAND_MAX + 1) * (125 - 35) + 35;//取数35到125之间          cout << nRandNumber[idx] << endl;      }      cout << RAND_MAX << endl;//最大值是32767                //srand是一个随机数种子产生函数，当参数为1时，所得到的随机数序列一样      //output : nRanNum1 : 41 nRanNum2 : 18467      //         nRanNum3 : 41 nRanNum4 : 18467      ofstream outFile("d:\out.txt");         srand(1);      int nRanNum1 = rand();      int nRanNum2 = rand();         cout << "nRanNum1 : " << nRanNum1 << " nRanNum2 : " << nRanNum2 << endl;             outFile << "nRanNum1 : " << nRanNum1 << " nRanNum2 : " << nRanNum2 << endl;      srand(1);      int nRanNum3 = rand();      int nRanNum4 = rand();      cout << "nRanNum3 : " << nRanNum3 << " nRanNum4 : " << nRanNum4 << endl;      outFile << "nRanNum3 : " << nRanNum3 << " nRanNum4 : " << nRanNum4 << endl;             system("pause");      return 1;         }  #endif