Write a C program to swap corresponding elements of two arrays using pointers. How to swap two arrays using pointers in C program. Logic to swap two arrays of different length using pointers in C programming.
Example
Input
Input first array: 10 20 30 40 50 60 70 80 90 100 Input second array: 0 9 8 7 6 5 4 3 2 1
Output
First array after swapping: 0 9 8 7 6 5 4 3 2 1 Second array after swapping: 10 20 30 40 50 60 70 80 90 100
Write a C program to copy one array elements to another array using pointers. How to copy array elements from one array to another array using pointers. Logic to copy one array to another array using pointers in C programming.
Example
Input
Input array1 elements: 10 -1 100 90 87 0 15 10 20 30
Output
Array1: 10 -1 100 90 87 0 15 10 20 30 Array2: 10 -1 100 90 87 0 15 10 20 30
Write a C program to input elements in an array and print array using pointers. How to input and display array elements using pointer in C programming.
Example
Input
Input array size: 10 Input elements: 1 2 3 4 5 6 7 8 9 10
Output
Array elements: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10
In this ongoing C programming tutorial series, we learnt many concepts related to function and pointers. Let us give a quick recall.
A function is a collection of statements grouped together to perform a task. Function encapsulates behaviour and allows us to write modular and reusable code. Instead of writing same code to perform an action ‘A’ repeatedly, we call a function that encapsulates action ‘A’.
Pointer is a variable pointing at a memory location of specific type. Type defines many important properties related to the pointer. Such as valid memory addresses it can point, pointer arithmetic, etc.
As per C programming semantics, you must specify pointer type during its declaration. Also, it is illegal to point pointer of one type to object of another type. For example, int pointer cannot point to a float variable.
Pointers are the most powerful as well as complex component of C programming. For newbies, it’s like learning rocket science in C. However, I have tried my best to simplify things.
In this ongoing series of C programming tutorial, I have explained many concepts related to pointers. Here in this section we will focus on some confusing pointer terminologies. We will learn and compare constant pointer with pointer to constant and constant pointer to constant.
In C programming, pointers and array shares a very close relationship. Array is a data structure that hold finite sequential collection of similar type data. We use array to store a collection of similar type data together. To access and array element we use index. These index starts from 0 and goes up to N-1 (where N is size of the array).
In previous two posts, we learned basics of pointers. We learned to create pointers and how to perform arithmetic operations on them.
We learned to create pointers to int and char. In real, you can have pointer to any type in C. You can have a pointer to int, char, float, double, structure, array or even pointer. In fact, you can declare pointer to pointer to pointer to pointer. That looks complex. For now, let us focus on pointer to pointer.
Pointer is a variable that points to a memory location. Memory addresses are numeric value that ranges from zero to maximum memory size in bytes. These addresses can be manipulated like simple variables. You can increment, decrement, calculate or compare these addresses manually.
C language provides a set of operators to perform arithmetic and comparison of memory addresses. Pointer arithmetic and comparison in C is supported by following operators –
++ and --+ and -<, >, <=, >=, ==, !=Pointers are the heart of C programming. It is the most distinct feature of C, which provides power and flexibility to C. Pointers separates C from other programming languages.
C programmers make extensive use of pointers, because of their numerous benefits. Below are some advantages of pointers.