string stream in c++
// CPP program to count words in a string
// using stringstream.
#include <bits/stdc++.h>
using namespace std;
int countWords(string str)
{
// breaking input into word using string stream
stringstream s(str); // Used for breaking words
string word; // to store individual words
int count = 0;
while (s >> word)
count++;
return count;
}
// Driver code
int main()
{
string s = "geeks for geeks geeks "
"contribution placements";
cout << " Number of words are: " << countWords(s);
return 0;
}