Integral arithmetic overflow check operators - CSharp Language Basics

CSharp examples for Language Basics:Operator

  1. HOME
  2. CSharp
  3. Language Basics
  4. Operator

Introduction

The checked operator tells the runtime to generate an OverflowException rather than overflowing silently.

The checked operator affects expressions with the ++, --, +, - (binary and unary), *, /, and explicit conversion operators between integral types.

checked can be used around either an expression or a statement block. For example: 

int a = 1000000;
int b = 1000000;

int c = checked (a * b);      // Checks just the expression.

checked                       // Checks all expressions
{                             // in statement block.
   ...
   c = a * b;
   ...
}

Using unchecked operator 

int x = int.MaxValue;
int y = unchecked (x + 1);
unchecked { int z = x + 1; }

Related Tutorials