Arithmetic & Assignment Operators

Arithmetic & Assignment Operators

Operators tell C# to perform operations on values and variables.

Arithmetic operators

int x = 100 + 50;    // 150
int y = 10 % 3;      // 1  (remainder of 10/3)
x++;                 // x becomes 151

Division of integers

When you divide two ints, the result is an int - the decimal part is dropped:

Console.WriteLine(10 / 3);   // 3, not 3.33

Use double values if you need decimals:

Console.WriteLine(10.0 / 3); // 3.333...

Assignment operators

The = operator assigns a value. There are shortcuts that combine assignment with an operation:

TL;DR

• Arithmetic: + - * / % ++ and --.
• Integer division drops the decimal part.
• Assignment shortcuts like += combine operation and assignment.