search trung in file

Question

how can i search a string in a file?

Answer 1

You can use this as a Base example.

#include <iostream>
#include <fstream>
#include <string>

int main()
{
std::cout << "Write the path of the file\n" ;
std::string path ;
std::cin >> path ;

std::ifstream file( path.c_str() ) ;

if( file.is_open() )
{
std::cout << "File '" << path << "' opened.\n" ;

std::cout << "Write the word you're searching for\n" ;
std::string word ;
std::cin >> word ;

int countwords = 0 ;
std::string candidate ;
while( file >> candidate ) // for each candidate word read from the file
{
if( word == candidate ) ++countwords ;
}

std::cout << "The word '" << word << "' has been found " << countwords << " times.\n" ;
}

else
{
std::cerr << "Error! File not found!\n" ;
return 1 ;
}
}