• Operator >> Extracts formatted data.
• Operator << Inserts formatted data.
• Method str() Gets the contents of underlying string device object.
• Method str(string) Sets the contents of underlying string device object.

Its header file is sstream.

One common use of this class is to parse comma-separated integers from a string (e.g., "23,4,56").

stringstream ss("23,4,56");
char ch;
int a, b, c;
ss >> a >> ch >> b >> ch >> c;  // a = 23, b = 4, c = 56

Here  is a storage area for the discarded commas.

If the >> operator returns a value, that is a true value for a conditional. Failure to return a value is false.

Given a string of comma delimited integers, return a vector of integers.

Function Description

Complete the parseInts function in the editor below.

parseInts has the following parameters:

• string str: a string of comma separated integers

Returns

• vector<int>: a vector of the parsed integers.

Note You can learn to push elements onto a vector by solving the first problem in the STL chapter.

Input Format

There is one line of  integers separated by commas.

Constraints

The length of  is less than .

Sample Input

23,4,56

Sample Output

23
4
56

Answer:

#include <sstream>
#include <vector>
#include <iostream>
using namespace std;
vector<int> parseInts(string str) {
    stringstream ss(str);   //string stream object
    vector<int> vec;   //vector declared to store values
    int a,b,c;
    int temp;
    char ch;
    if(str.length() < 800000)
    {
        while(ss) //while string stream object doesn't hit null
             {
                 ss>>temp>>ch; //extract comma saperated int
                 vec.push_back(temp); //push the integer into vector
             }
    }
    
    return vec;  //return the values stored in vec
}
int main() {
    string str;
    cin >> str;
    vector<int> integers = parseInts(str);
    for(int i = 0; i < integers.size(); i++) {
        cout << integers[i] << "\n";
    }
    
    return 0;
}