Removing spaces from a string using Stringstream


Solution to removing spaces from a string is already posted here. In this article another solution using stringstream is discussed.

Algorithm

1. Enter the whole string into stringstream.
2. Empty the string.
3. Extract word by word and concatenate to the string.
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// C++ program to remove spaces using stringstream
#include<bits/stdc++.h>
using namespace std;
  
/* Function to remove spaces */
string removeSpaces(string str)
{
    stringstream ss;
    string temp;
  
    /* Storing the whole string into string stream */
    ss << str;
  
    /* Making the string empty */
    str = "";
  
    /* Running loop till end of stream */
    while (!ss.eof())
    {
        /* extracting word by word from stream */
        ss >> temp;
  
        /* concatenating in the string to be
          returned*/
        str = str + temp;
    }
    return str;
}
  
/*Driver function */
int main()
{
    string s = "This is a test";
    cout << removeSpaces(s) << endl;
  
    s = "geeks for geeks";
    cout << removeSpaces(s) << endl;
  
    s = "geeks quiz is awsome!";
    cout << removeSpaces(s) << endl;
  
    s = "I   love     to     code";
    cout << removeSpaces(s) << endl;
  
    return 0;
}

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Output:

Thisisatest
geeksforgeeks
geeksquizisawsome!
Ilovetocode

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