Try-Catch Blocks

Try-catch blocks work similarly to if-else statements, but are intended for code that might throw an error.

Consider the following code:

try {
    cin >> dividend;
    cin >> divisor;
    if (divisor==0)  throw 0;
    quotient = dividend / divisor;
    cout << quotient << endl;
}catch(...){
    cout<<"Divisor is 0"<<endl;
} 

The code in the try block is the code you always want to run, that might throw an error.
The code in the catch block is the code to run when there is an error.
The “...” tells the catch block to catch all errors, however you can also specify which errors you want to catch:

try{
    cin >> dividend;
    cin >> divisor;
    if (divisor==0) throw 0;
    quotient = dividend / divisor;
    cout << quotient << endl;
}catch(int x){
    cout<<"Divisor is 0"<<endl;
}catch(double y){
    //This does not run because throw is an int
    cout<<"Divisor is 0"<<endl;
}