What is a function.

Answer 1

As Bhavya Bhav already gave you an idea what it is I will provide you an example why we need functions(this just one use case)

Take this code

int result = 2*2+3;
print(result) ;
int result = 3*3+5;
print(result) ;
int result = 8*8+3;
print(result) ;

As you can see same code is repeated for different values

We can use a function to avoid this

void func(int x, int y)
{
int result = x*x+y;
print(result) ;
}

func(2, 3);
func(3, 5);
func(8, 3);

As you can see using a function addresses code repition and make code more readable

Answer 2

Thanks a lot