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Difference between revisions of "C"

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(Hello World!)
m
Line 31: Line 31:
 
#include <stdio.h>
 
#include <stdio.h>
 
   
 
   
int main(void)
+
int main(void) {
{
 
 
     printf("Hello, world\n");
 
     printf("Hello, world\n");
 
     return 0;
 
     return 0;

Revision as of 22:57, 9 February 2014

C is a programming language designed for application and systems programming. It was created by the late master himself, Dennis Ritchie, so that he could create Unix. C is standardized by ISO and is currently at the C11 standard.

C propaganda.jpg

Qualities

C is a very simple language, whose parts can combine to form very complex code structures.

Language

C is an imperative, procedural, structured language. This means:

  • Code is a sequence of statements that change program state
  • Statements may be organized in control structures like if, while, for
  • Code may be organized as functions, which may be called from elsewhere

Type system

C is statically but weakly typed. This means:

  • Types must be declared
  • Values can be loosely converted between types regardless of compatibility

Examples

The examples provided here can be compiled and run using a C compiler such as gcc or clang.

Hello World!

#include <stdio.h>
 
int main(void) {
    printf("Hello, world\n");
    return 0;
}