C First Program

C Programming Introduction : Tips

1.  Every C Program Should have exactly one main function
2. C Program Execution Always Starts from main.
3. Execution of C Program begins at Opening brace of function and ends at closing brace of the function
4. Generally all statements in c are written in Lowercase Letters.
5. Uppercase Letters are used for Symbolic names,output strings and messages
6. Every C statement must ends with semicolon
7. All variables must be declared with respective data types before using .
8. C is free form-Language
9. Comments can be inserted anywhere in C Program , but nested comments are not supported by C .
10. Braces are Generally Used for the Grouping of statements

Sample C Program :

//C hello world example
#include <stdio.h>
 
int main()
{
  printf("Hello world\n");
  return 0;
}

Output: 

Hello world