C Language has supported many data types.Which we use writing program.C Language gave authority to programmers to create and use datatypes. Below i have shown you list of basic data types.That are introduce by ANSI standard. datatypes in C: char: required 1 byte and it used for characters or integer variables. int: required 2 or 4 bytes and it used for integer values. float: required 4 bytes and it used for Floating-point numbers. double: required 8 bytes and it used for Floating-point numbers.