- C++ Programming Examples
- C++ Programming Examples
- C++: Hello World
- C++: Get Input
- C++: Print Integer
- C++: Add two numbers
- C++: Add, Sub, Multiply, Div
- C++: Add Digits
- C++: Find Average and Percentage
- C++: Find Arithmetic Mean
- C++: Sum of n Natural Numbers
- C++: Sum of n Numbers
- C++: Square's Area and Perimeter
- C++: Rectangle's Area and Perimeter
- C++: Triangle's Area and Perimeter
- C++: Area and Circumference
- C++: Find Simple Interest
- C++: Fahrenheit to Celsius
- C++: Celsius to Fahrenheit
- C++: Print Prime Numbers
- C++: Reverse a Number
- C++: Swap Two Numbers
- C++: Print Multiplication Table
- C++: Find Factorial of a Number
- C++: Find Factors of a Number
- C++: Find HCF and LCM
- C++: Create a Calculator
- C++: Count Digits in a Number
- C++: First and Last Digit Sum
- C++: Product of Number Digits
- C++: Sum of Squares of Digits
- C++: Interchange Digits of Number
- C++ if-else Programs
- C++: Check Even or Odd
- C++: Check Prime or Not
- C++: Check Alphabet or Not
- C++: Check Vowel or Not
- C++: Check Leap Year or Not
- C++: Check Reverse equals Original
- C++: Check Perfect Number
- C++: Check Palindrome or Not
- C++: Check Armstrong or Not
- C++: Divisibility Test
- C++: Find Labor Wage
- C++: Find Discounted Price
- C++: Find Shipping Charge
- C++: Find Telephone Bills
- C++: Calculate Student Grade
- C++: Largest of Two Numbers
- C++: Largest of Three Numbers
- C++ Number Conversion
- C++: Decimal to Binary
- C++: Decimal to Octal
- C++: Decimal to Hexadecimal
- C++: Binary to Decimal
- C++: Binary to Octal
- C++: Binary to Hexadecimal
- C++: Octal to Decimal
- C++: Octal to Binary
- C++: Octal to Hexadecimal
- C++: Hexadecimal to Decimal
- C++: Hexadecimal to Binary
- C++: Hexadecimal to Octal
- C++ Pattern Programs
- C++: Pattern Programs
- C++: Print Diamond Pattern
- C++: Print Floyd's Triangle
- C++: Print Pascal's Triangle
- C++ Array Programs
- C++: 1D Array Program
- C++: Linear Search
- C++: Binary Search
- C++: Largest Element in an Array
- C++: Smallest Element in an Array
- C++: Find Second Largest Element
- C++: Find Second Smallest Element
- C++: Sum of All Elements
- C++: Multiply All Elements
- C++: Element in Even Position
- C++: Element in Odd Position
- C++: Print Even Numbers in Array
- C++: Print Odd Numbers in Array
- C++: Count Even or Odd Numbers
- C++: Sum of Even or Odd Numbers
- C++: Count Positive, Negative, Zero
- C++: Reverse an Array
- C++: Insert an Element
- C++: Delete an Element
- C++: Merge two Arrays
- C++: Bubble Sort
- C++: Selection Sort
- C++: Insertion Sort
- C++: Common Elements
- C++: 2D Array Programs
- C++: Add Two Matrices
- C++: Subtract Two Matrices
- C++: Transpose Matrix
- C++: Multiply Two Matrices
- C++: 3D Array Programs
- C++ String Programs
- C++: Print String
- C++: Find String Length
- C++: Compare Two Strings
- C++: Copy String
- C++: String Concatenation
- C++: Reverse a String
- C++: Delete Vowels from a String
- C++: Delete a Word from a String
- C++: Count Characters in a String
- C++: Count Words in a String
- C++: Frequency of Words
- C++: Remove Spaces from Strings
- C++: Sort a String
- C++: Uppercase to Lowercase
- C++: Lowercase to Uppercase
- C++: Swap Two Strings
- C++: Check the Anagram or Not
- C++: Capitalize All Words in a String
- C++: Get Numbers from a String
- C++ File Programs
- C++: Read a File
- C++: Write Content to a File
- C++: Append Data to a File
- C++: Read and Display File
- C++: Copy a File
- C++: Merge Two Files
- Count Characters in a File
- C++: Capitalize Every Word
- C++: List Files in Directory
- C++: Delete a File
- C++: Encrypt and Decrypt a File
- C++ Misc Programs
- C++: Print ASCII Value
- C++: Add Binary Numbers
- C++: Generate Random Numbers
- C++: Print a Smiling Face
- C++: Days into Years and Months
- C++: Add Two Numbers using Pointer
- C++: Print Fibonacci Series
- C++: Generate Armstrong Numbers
- C++: Find nCr and nPr
- C++: Get IP Address
- C++: Print Date and Time
- C++: Shutdown and Restart Computer
- C++ Programming Tutorial
- C++ Tutorial
C++ Program for Two-Dimensional (2D) Array
In this article, you will learn and get code to implement a two-dimensional (2D) array in C++. Here is the list of programs on the 2D array:
- Initialize and Print a Two-Dimensional Array
- Receive size and elements from the user and print a two-dimensional array
Note: A two-dimensional (2D) array can be thought of as a matrix with rows and columns. For example:
1 2 3 4 5 6
is a two-dimensional array with two rows and three columns in size.
Two-Dimensional Array Program in C++
This program initializes 8 elements in a two-dimensional array of size four rows and two columns, then prints the array on output:
#include<iostream> using namespace std; int main() { int arr[4][2] = {{1, 2}, {3, 4}, {5, 6}, {7, 8}}; int i, j; cout<<"The Two-dimensional Array is:\n"; for(i=0; i<4; i++) { for(j=0; j<2; j++) cout<<arr[i][j]<<" "; cout<<endl; } cout<<endl; return 0; }
This program was built and runs under the Code::Blocks IDE. Here is its sample output:
Note: The outer for loop is responsible for rows, and the inner for loop is responsible for columns.
Get Array Elements of the Given Size from the User
Now this program allows the user to enter the dimension or size of a 2D array and then its elements of the given size to store it in a 2D array arr[][] and print the array back on the output screen along with the index number (row and column number starting from 0):
#include<iostream> using namespace std; int main() { int row, col, i, j, arr[10][10]; cout<<"Enter the Row and Column Size for Array: "; cin>>row>>col; cout<<"Enter "<<row*col<<" Array Elements: "; for(i=0; i<row; i++) { for(j=0; j<col; j++) cin>>arr[i][j]; } cout<<"\nThe Array is:\n"; for(i=0; i<row; i++) { for(j=0; j<col; j++) cout<<arr[i][j]<<" "; cout<<endl; } cout<<"\nArray Elements with its Index:\n"; for(i=0; i<row; i++) { for(j=0; j<col; j++) cout<<"arr["<<i<<"]["<<j<<"] = "<<arr[i][j]<<" "; cout<<endl; } cout<<endl; return 0; }
The snapshot given below shows the initial output produced by this program:
Now supply inputs of 3 as the row size and 4 as the column size of the array, then 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 1, 2 as the 12 elements for the array:
The same program in different languages
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