C Programming language

C Standard Library Function

Day 1: Introduction and brief history of C Programming language

Day 1: Advantages and Disadvantages of C, C Keywords, Data type modifiers in C

Day 1: Data types in C Programming language

Day 1: Secondary data types, Primitive and Non-primitive data types

Day 1: C Variables, C Constant, Format Specifiers in C

Day 2: Write first C program

Day 2: Flow of C program with example, main(), printf(), scanf()

Day 2: Operaters in C Programming language, Arithmetic operators

Day 2: Relational operators and Logical Operators in C Programming language

Day 2: Assignment, Increments and Decrement Operators in C Programming language

Day 3: Conditional statement: if else statement in C Programming language

Day 3: Conditional statement: switch statement in C Programming language

Day 3: Jump statements: return statement in C Programming language

Day 3: Jump statements: go to statement in C Programming language

Day 3: Jump statements: break statement in C Programming language

Day 3: Jump statements: continue statement in C Programming language

Day 4: Loops OR Iteration statement in C Programming language: for Loop

Day 4: Loops OR Iteration statement in C Programming language: while Loop

Day 4: Loops OR Iteration statement in C Programming language: do while Loop

Day 5: Array in C Programming language

Day 5: Access elements of Array in C Programming language

Day 5: One dimensional Array representation in memory using C Programming language

Day 5: Two dimensional Array representation in memory using C Programming language

Day 5: Multidimensional Array in C Programming language

Day 6: Function in C Programming language

Day 6: Definition, Declaration and Calling a Function in C Programming language

Day 6: Passing array to a function in C Programming language

Day 6: Calling Function in C Programming language : Call by value

Day 6: Calling Function in C Programming language : Call by reference

Day 6: Recursive Function in C Programming language

Day 6: Adding function to the library in C Programming language

Day 7: Pointer in C Programming language, How to use Pointer, Pointer declaration

Day 7: NULL Pointers in C Programming language

Day 7: Array of Pointers in C Programming language

Day 7: Pointer arithmetic in C Programming language

Day 7: Pointer to Pointer in C Programming language

Day 7: Pointer to Function in C Programming language: Passing pointers to functions

Day 7: Pointer to Function in C Programming language: Return pointer from functions

Day 8: Strings in C Programming language, Declaring String in C Programming language

Day 8: String functions in C Programming language

Introduction of Structure

Accessing the members of Structure

Structure With typedef Keyword and Use of sizeof function

Example of Structure

Dynamic memory allocation in C: Introduction

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Day 5 Multi Dimensional Array: One-dimensional and two-dimensional Array
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Multidimensional arrays are often known as array of the arrays. In multidimensional arrays the array is divided into rows and columns, mainly while considering multidimensional arrays we will be discussing mainly about two dimensional arrays and a bit about three dimensional arrays. In 2-D array we can declare an array as :

Syntax

data_type array_name[][][]; 

Example

int arr[3][3] = { 1, 2, 3, 4, 5, 6, 7, 8, 9};

where first index value shows the number of the rows and second index value shows the no. of the columns in the array. To access the various elements in 2-D we can access it like this:

printf("%d", a[2][3]);/* its output will be 6, as a[2][3] means third element of the second row of the array */
Example
#include<stdio.h> 
#include<conio.h> 
void main() 
{ 
	int i, j; 
	int num[3][3]={ 
	{20, 48, 65}, 
	{89, 34, 70}, 
	{90, 75, 49} 
	}; 
	clrscr(); 
	printf(" Elements of 2D array\n\n"); 
	for(i=0;i<3;i++) 
	{ 
		for(j=0;j<3;j++) 
		{ 
			printf ("%d\t", num[i][j]); 
		} 
		printf("\n"); 
	} 
	getch(); 
} 
Output :

Elements of 2D array

20     48     65

89     34     70

90     75     49

# Three dimensional we can declare the array in the following manner :

int arr[3][3][3] = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 
10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 
	22, 23, 24, 25, 26, 27 };

/* here we have divided array into grid for sake of convenience as in above
declaration we have created 3 different grids, each have rows and columns */

If we want to access the element the in 3-D array we can do it as follows :

printf( "%d" , a[2][2][2]);

Its output will be 26, as a[2][2][2] means first value in [] corresponds to the grid no. i.e. 3 and the second value in [] means third row in the corresponding grid and last [] means third column

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