c++ - Ignoring a line beginning with a '#' in command prompt -

i writing code requires me ignore comment lines (i.e, lines beginning # sign) till end of line. i'm using linux code in c++. e.g: in case of adding 2 numbers.

xxx@ubuntu:~ $ ./add enter 2 numbers added 1 #this first number 2 #this second number result: 3 

so comment line can anywhere. has ignore entire line , take next value input.

#include <iostream> using namespace std; int main() { int a,b;   cout<< "enter 2 numbers added:\n"; while(cin >>a >>b) { if (a == '#'|| b == '#') continue; cout << "result: "<<a+b; } return 0; } 

from have shown, think might want.

int main() {     string comment;     int nr1,nr2;     // read first number. should first 1 always. no comment before number!     cin >> nr1;                  // see if can read second number successfully. means integer.     if(cin >> nr2) {     }      // otherwise clear cin , read rest of comment line                             else {         cin.clear();                    getline(cin,comment);         // read second number second line         cin >> nr2;                }     // read rest of second line.     getline(cin,comment);         cout << "result: " << nr1 + nr2 << endl;     return 0; }