Examples for Datatypes

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Example for Primitive Datatypes in C  

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                       intvar.c

/* example for integer variable declaration */

# include <stdio.h>

main()

{

  int num = 100;

  printf("\nValue of num is %d", num);

  getch();

}

In this program,

we have declared a integer variable using the keyword 'int' . int is a primitive datatype

/* */ is a comment line and ignored by the compiler. Comment

lines are used for documenting the program which makes it more readable

* variables are declared in the beginning of the program

* the number of bytes allocated for a int variable is 2 bytes (32 bits) and it varies from compiler to compiler if the OS environment is different like Unix

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