Objective-C

Objective-C: Variables

8 years ago euroinformatica

A variable it’s a data type and can be composed by letters, numbers and underscore character.

Type:

char: 1 byte(octet)
int
float: single precision floating point value
double: double precision floating point value
void: absence of type
bool: true or false – 1 byte

Variable definition:

Syntax: type variable_name;

Example:

int i,j,k;

char c, ch;

float f, money;

double d;

Code:

#import <Foundation/Foundation.h>

// Variable declaration:
extern int a, b;
extern int c;
extern float f;

int main ()
{
  /* variable definition: */
  int a, b;
  int c;
  float f;
 
  /* actual initialization */
  a = 10;
  b = 20;
  
  c = a + b;
  NSLog(@"value of c : %d \n", c);

  f = 70.0/3.0;
  NSLog(@"value of f : %f \n", f);
 
  return 0;
}