How to cout individual words from a input file containing multiple sentences. C++

Question

#include <iostream>
#include <fstream>
//#include <cstring>
//#include <string>

using namespace std;

int main()
{
    string word;
    ifstream infile;
    infile.open ("inputfile.txt"); 

    if (infile.fail()) 
        { 
            cout<<"UNABLE TO ACCESS INPUT FILE";
        }

    while(!infile.eof())
        {
            while (infile>> word)
                 {
                    cout<<word<<endl<<endl;
                 }  
        }

    infile.close ();

    system("pause");

    return 0;   
}

The above code couts all the words in the input text file. How do I cout just one word of my choice? I am asking this because I want to eventually be able to cin a word from user, and find that word in the input file either to delete or replace it with another word.

you can use an if statement to check what the word it before printing it — Gab, Mar 08 '17 at 06:32
First please read [Why is iostream::eof inside a loop condition considered wrong?](http://stackoverflow.com/questions/5605125/why-is-iostreameof-inside-a-loop-condition-considered-wrong). Then think about what you're doing in the innermost loop (the outer isn't needed, and is wrong as you now have read). — Some programmer dude, Mar 08 '17 at 06:32

score 1 · Accepted Answer · answered Mar 08 '17 at 06:42

here is example to find word from string

std::string str ("There are two needles in this haystack with needles.");
std::string str2 ("needle");

 std::size_t found = str.find(str2);
 if (found!=std::string::npos)
 std::cout << "first 'needle' found at: " << found << '\n';

How to cout individual words from a input file containing multiple sentences. C++

1 Answers1