The void pointer in C cannot be dereferenced directly. Let's see the below example. #include <stdio.h> intmain() { inta=90; void*ptr; ptr=&a; printf("Value which is pointed by ptr pointer : %d",*ptr); return0; } In the above code, *ptr is a void pointer which is pointing ...
Pointer to function in C As we discussed in the previous chapter, a pointer can point to a function in C. However, the declaration of the pointer variable must be the same as the function. Consider the following example to make a pointer pointing to the function. #include<stdio.h> intad...
Pointer to pointer:C allows you to have pointer on a pointer and so on. Passing pointers to functions in C:Passing an argument by reference or by address enable the passed argument to be changed in the calling function by the called function. Return pointer from functions in C:C allows a...
Javatpoint JTP In the above example, if the string object is null, the msg will be a null value; otherwise, it will print the actual string. Checking arguments of the method We can check on the arguments of a method for null values before executing the body of the method. Consider the...