#include <iostream>
#include <string>
#include <cctype>
#include <sstream>
using namespace std;
 
int main(){
 
    string str; //Store a number
    int i=0; //Spit out the number
 
    cout << "Enter a number: ";
    getline(cin, str);
 
    while(true){
        stringstream ss(str);
        if (ss >> i){
            break;
        }
        else{
            cout <<"\nPlease enter a valid number: ";
            getline(cin,str);
        }
    }
 
    cout << "\nThe value stored in string str was: " << i;
 
 return 0;
}
 

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