C Sharp int
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The int class in C Sharp is a data type which can store positive and negative whole numbers in variables.
See Integer for generic information about what integers can represent and how they are represented in memory.
Size
A long in C# is represented by 4 bytes, or 32 bits.
This means it can store integral values from -2,147,483,648 to 2,147,483,647.
For integers that don't fit this range, you can use the C Sharp long data type instead.
Example
int a;
int b = 74;
int c = (int)15.2; // 15
Casting
To cast to an int, you can use the casting operator (int) or the Convert.ToInt32 function:
char a = 'A';
int b = (int)a; // 65
int c = Convert.ToChar(a); // 65
This is different to casting to a long, which uses the (long) operator or the Convert.ToInt64 function.