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

int main(){
    fstream fp;
    char ch;
    fp.open("/home/rithik/C++/OOP/a.txt",ios::in);
    if(!fp){
            cout<<"FILE can't be opened \n";return 0;
    }
    else
            cout<<"File opened \n";
    while(!fp.eof()) {// return true if eof reached i.e. end of file
            fp>>ch; // file copied character by character
            cout<<ch;
    }
    cout<<endl;
    fp.close();
    return 0;

}

为什么会这样，所以文件a.txt中的最后一个字符被打印两次 例如a.txt是“你好” 运行此代码后，我得到结果

Helloo