Apointeris a very powerful and sophisticated feature provided in the C language. A variable defined in a program the compiler allocates a space in thememoryto store its value. The number of bytes allocated to th
Such a variable is called apointer variable(for reasons which hopefully will become clearer a little later). In C when we define a pointer variable we do so by preceding its name with an asterisk. In C we also give our pointer a type which, in this case, refers to the type of data ...
What is a Pointer? This blog post will cover the basics ofpointers, a programming tool that is used in languages like C and C++. In this post, we will be using C as our primary language.Pointersare variables that contain amemory address(a concept used to access the computer’s primary ...
What are the characteristics of the C programming language? What is a keyword in C programming language? What are the uses of the C programming language? What is pointer in C programming language? What is the history of the C programming language?
What is a structure in C programming language? In C++, create a class called MyInteger. It should have a field of type pointer-to-int called pInteger. It should have a constructor that takes as a parameter an int - the constructor will then dynami ...
cout << "The value is " << *ptr; } }; void SomeFunc(Sample x) {cout << "Say i am in someFunc " << endl; } int main() { Sample s1 = 10; SomeFunc(s1); s1.PrintVal(); }In the above example when PrintVal() function iscalled it is called by the pointer that has been...
Yes, you can declare a constant pointer in C using the const modifier. This means that the pointer itself cannot be modified to point to a different memory location, but the value stored at the memory location it points to can still be changed. ...
We can implement the call-back function using the function pointer in the C programming. A call-back function is important for any programing language. In programming, a callback function is any executable code that is passed as an argument to other code that is expected to call back (execut...
What is NULL pointer and how it is defined? For a user-defined data type, what should be used typedef or #define? Is char string[5] = "Hello"; valid? Missing ampersand/address of (&) in scanf() (C language Error) Too few arguments to function (C language Error) ...
What happens if we use an uninitialized array in C language?If we use any uninitialized array in C program, compiler will not generate any compilation and execution error i.e. program will compile and execute properly.If the array is uninitialized while declaring and even after the declaration ...