C Function Pointer Archives - Just Tech Review

We announce a pointer to number, pointer to character or pointer to cluster. Likewise, we can pronounce a pointer to function or a function pointer. Same as like factors, functions likewise have some location in memory. C Function Pointer A function pointer is a pointer that contains the location of a function. It very well may be pronounced in the following manner. You should pursue a similar sentence structure for presentation else you will get a mistake. Syntax return_type (* pointer_name) (argument_list); Example int (*p) (int, int); In the above example, we are announcing a pointer to function or a function pointer that will contain the location of a function with return type whole number and having two whole number contentions. The above function pointer p can be appointed location of a function and can call that function in the following manner. Let's expect the function with the name fun1(). //storing address of function in the function pointer p p = fun1; //first way p = &fun1 //second way //calling the function using function pointer p int c = (*p)(2,3); //first way int c = p(2,3); //second way As should be obvious in the above example that function pointer can be doled out the address and can call a function in two different ways. You can utilize any of them. Let's make one program that will figure expansion of two numbers utilizing the idea of function pointer in C. #include int add(int a,int b) { return a+b; } void main() { int (*p)(int,int); p=&add; printf("Sum=%dn",(*p)(5,3)); } Output: Sum=8 Press any key to continue . . . _ Clarification Right off the bat, I have made a function include() that will take two whole number contentions, compute their expansion and return the outcome. Presently in the primary() function, I am proclaiming a function pointer p and afterwards putting away the location of function include(). This should be possible without utilizing the location of the administrator for example and. At last, I am calling the function utilizing the function pointer and afterwards showing the outcome. As I have just referenced over that the calling should likewise be possible in two different ways. So here we can call the function by basically composing p(5,3). Beneath I have included a video that will help you in understanding the idea of function pointer or pointer to function in C. C function pointer is a development theme of pointer and somewhat troublesome as well. In the event that you have any sort of questions, at that point please notice it in remarks.