Program to Parse a comma separated string in C++

Given a comma-separated string, the task is to parse this string and separate the words in C++.

Examples:

Input: "1, 2, 3, 4, 5"
Output: 
1
2
3
4
5

Input: "Geeks, for, Geeks"
Output: 
Geeks
for
Geeks

Approach:



  • Get the string in stream – stringstream
  • Create a string vector to store the parsed words
  • Now till there is a string in stringstream, checked by good() method,
    • Get the substring if the string from starting point to the first appearance of ‘, ‘ using getline() method
    • This will give the word in the substring
    • Now store this word in the vector
    • This word is now removed from the stream and stored in the vector

Below is the implementation of the above approach:

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code

// C++ program to parse a comma-separated string
  
#include <bits/stdc++.h>
using namespace std;
  
int main()
{
    string str = "1, 2, 3, 4, 5, 6";
    vector<string> v;
  
    stringstream ss(str);
  
    while (ss.good()) {
        string substr;
        getline(ss, substr, ', ');
        v.push_back(substr);
    }
  
    for (size_t i = 0; i < v.size(); i++)
        cout << v[i] << endl;
}

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Output:

1
2
3
4
5
6


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