Question

I’d like to catch exception which occurs when somebody gives not a number value on the cin so the program will read next value.

#include <iostream>

using namespace std;

int main()
{
    int x = 0;
    while(true){
        cin >> x;
        cout << "x = " << x << endl;
    }
    return 0;
}

Answer 1

If you really want to use exception handling, you could do something like this:

cin.exceptions(ios_base::failbit); // throw on rejected input
try {
// some code
int choice;
cin >> choice;
// some more code
} catch(const ios_base::failure& e) {
    cout << "What was that?\n";
    break;
} 

Reference: http://www.cplusplus.com/forum/beginner/71540/