C++ program to read file word by word
Last Updated :
14 Feb, 2023
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Given a text file, extract words from it. In other words, read the content of file word by word. Example :
Input: And in that dream, we were flying. Output: And in that dream, we were flying.
Approach : 1) Open the file which contains string. For example, file named "file.txt" contains a string "geeks for geeks". 2) Create a filestream variable to store file content. 3) Extract and print words from the file stream into a string variable via while loop.
// C++ implementation to read
// file word by word
#include <bits/stdc++.h>
using namespace std;
// driver code
int main()
{
// filestream variable file
fstream file;
string word, t, q, filename;
// filename of the file
filename = "file.txt";
// opening file
file.open(filename.c_str());
// extracting words from the file
while (file >> word)
{
// displaying content
cout << word << endl;
}
return 0;
}
// C++ implementation to read// file word by wordusing namespace std;// driver codeint main(){ // filestream variable file fstream file; string word, t, q, filename; // filename of the file filename = "file.txt"; // opening file file.open(filename.c_str()); // extracting words from the file while (file >> word) { // displaying content cout << word << endl; } return 0;}Output:
geeks for geeks.
Time Complexity: O(N) // going through the entire file
Auxiliary Space: O(1)
