Thread: practical use of function pointer

I understand that function pointer is pointer in c language – that can store the address of a function, and can be use in call back

simple code

Code:

 #include <stdio.h>

void foo()
{
	printf(" Welcome ");
}




int main() 
{
    
	void (*fp)() = &foo;
    // foo(); 
	fp();
    return 0;
}

if i use function pointer or function name I get same result



Could you please provide some clarity on why and when function pointers are commonly used ?

I'd appreciate any examples you could offer to help me grasp their usefulness ?