<return type of function> (*<ptr_name>) (arguments)

Example :

#include<stdio.h>
#include<conio.h>
int add(int,int); // fun_prototype

void main()
{
int ans;

int (*p)(int,int); // p is a pointer to a function which take 2 integers arguments and return an integer.
p=add; // p now points to add function
ans=(*p)(10,20); // calling of add() function using function pointer
printf(“answer is %d”,ans);
}
int add(int a,int b)
{
return (a+b);
}