file_r01.cpp

来自「在c环境下的对数据结构进行讲解,包含有例题及答案」· C++ 代码 · 共 23 行

//file_r01.cpp
#include <fstream.h>
#include <conio.h>
void main()
{ int n;
  char ch;
  fstream file;
  file.open("random.dat",ios::app|ios::in|ios::out|ios::binary);
  do
  { cout << "输入任意数:"; cin >> n;
    file.write((char*)&n,sizeof(n));	//写入文件尾
    cout << "再输入吗(Y/N)?"; cin >> ch;
  } while ((ch=='y')||(ch=='Y'));
  file.seekg(0);					//设置到文件头
  file.read((char*)&n,sizeof(n));
  while (!file.eof())				//EOF就结束
  { cout << n << ",";
    file.read((char*)&n,sizeof(n));	//读取数据
  }
  cout << endl;
  getch();
}