C++ program to read file word by word
Last Updated :
14 Feb, 2023
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.
CPP
#include <bits/stdc++.h>
using namespace std;
int main()
{
fstream file;
string word, t, q, filename;
filename = "file.txt";
file.open(filename.c_str());
while (file >> word)
{
cout << word << endl;
}
return 0;
}
|
Output:
geeks
for
geeks.
Time Complexity: O(N) // going through the entire file
Auxiliary Space: O(1)
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