The C programming language is a general-purpose, operating system-agnostic, and procedural language that supports structured programming and provides low-level access to the system memory. Dennis Ritchie invented C language in 1972 at AT&T (then called Bell Laboratory), where it was implemented in the UNIX system on DEC PDP II. It was also the successor of the B programming language invented by Ken Thompson. C was designed to overcome the problems encountered by BASIC, B, and BPCL programming languages. By 1980, C became the most popular language for mainframes, microcomputers, and minicomputers.
| Type | Size (in bytes) | Format Specifier |
|---|---|---|
| int | min 2, normally 4 | %d |
| char | 1 | %c |
| float | 4 | %f |
| double | 8 | %lf |
| short int | 2 normally | %hd |
| unsigned int | min 2, normally 4 | %u |
| long int | min 4, normally 8 | %li |
| long long int | min 8 | %lli |
| unsigned long int | min 4 | %lu |
| signed char | 1 | %c |
| unsigned char | 1 | %c |
| long double | min 10, normally 12 or 16 | %Lf |
#include <stdio.h> // Header
int main() // Main
{ // Code inside "{}" is the body
printf("\n This is a C Program "); // Statement: Instructions given to compiler
return 0; // Returns value from main()
}