C# Data Types
A data type specifies the size and type of variable values. It is prominent to use the correct data type for the corresponding variable; to avoid errors, to save time and memory, besides it will also make your code more maintainable and readable. The most popular data types are: Data Type Size Description int 4 bytes Stores whole numbers from -2,147,483,648 to 2,147,483,647 long 8 bytes Stores whole numbers from -9,223,372,036,854,775,808 to 9,223,372,036,854,775,807 float 4 bytes Stores fractional numbers. Sufficient for storing 6 to 7 decimal digits. double 8 bytes Stores fractional numbers. Sufficient for storing 15 decimal digits. bool 1 bit Stores true or false values char 2 bytes Stores a single character/letter, surrounded by single quotes string 2 bytes per character Stores a sequence of characters, surrounded by double quotes