When must we use checked operator in C#?

Question

When must we use checked operator in C#?
Is it only suitable for exception handling?

Answer 1

checked will help you to pick up System.OverFlowException which will go unnoticed otherwise

int result = checked (1000000 * 10000000);   
    // Error: operation > overflows at compile time

int result = unchecked (1000000 * 10000000);  
    // No problems, compiles fine