Primitives in Objective-C

Primitive types in Objective-C are the basic data types used to declare variables in the program. There are six primitive data types in Objective-C:

1. int: Used to store integer values (whole numbers). For example:

int age = 29;

2. float: Used to store single-precision floating-point values (decimal numbers). For example:

float price = 19.99;

3. double: Used to store double-precision floating-point values (decimal numbers with greater precision than float). For example:

double pi = 3.14159;

4. char: Used to store a single character (represented by ASCII value). For example:

char grade = 'A';

5. BOOL: Used to store a Boolean value (YES or NO). For example:

BOOL isTall = YES;

6. void: Used to declare functions that do not return a value. For example:

void greet() {
    printf("Hello World!\n");
}

These primitive types are used to declare variables, which allows you to store and manipulate data in your program. For example:

int num1 = 10;
int num2 = 20;
int sum = num1 + num2;
NSLog(@"%d + %d = %d", num1, num2, sum);

Output: 10 + 20 = 30