To call a method in a class in Objective-C, you need to create an instance (object) of that class and then call the method using the dot notation or square bracket notation.
Here's an example:
Suppose you have a class called Calculator with a method called addNumbers that takes two integers as input and returns their sum:
``objective-c
@interface Calculator : NSObject
- (int)addNumbers:(int)num1 with:(int)num2;
@end
@implementation Calculator
- (int)addNumbers:(int)num1 with:(int)num2 {
return num1 + num2;
}
@end
objective-cCalculator
To call this method, you need to first create an instance of theclass:
Calculator *myCalculator = [[Calculator alloc] init];
objective-caddNumbers
Then, you can call themethod on themyCalculatorobject using either dot notation or square bracket notation:
int sum = [myCalculator addNumbers:5 with:10];
NSLog(@"The sum is: %d", sum);
// or
int sum = myCalculator.addNumbers(5, 10);
NSLog(@"The sum is: %d", sum);
`
Both of these will call the addNumbers method on the myCalculator object, passing in the two integers 5 and 10, and returning their sum, which will be stored in the sum variable. The result will then be printed to the console using NSLog`.