46、string类的push_back的应用按字符存储数据

string类的push_back的应用-按字符存储数据

示例

#include <iostream>
#include <fstream>
#include <string>
using namespace std;

int main ()
{
  string str;
  ifstream file("F:\\log.txt",ios::in);
  while (!file.eof())
  {
    str.push_back(file.get());
  }
  cout << str;
  return 0;
}