2D Array with Example C Program
Subject: PPS (Programming for Problem Solving)
Contributed By: Sanjay
Created At: February 3, 2025
Question:
Explain Two-Dimensional (2D) Array with an Example Program
Explanation Video:
Explanation:
A 2D array is an array of arrays, meaning it has rows and columns like a table or matrix. It is useful for storing tabular data, such as marksheets, matrices, or game boards.
Declaration and Initialization:
- Declaration specifies the number of rows and columns.
- Initialization assigns values to the array elements.
Syntax:
data_type array_name[rows][columns];
data_type array_name[rows][columns] = { {value1, value2}, {value3, value4} };
Key Points:
Elements are stored row-wise.
Accessing elements requires two indices (row and column).
Can be used for matrices, seating arrangements, or game boards.
Source Code:
#include <stdio.h>
int main() {
int matrix[2][3] = { {1, 2, 3}, {4, 5, 6} }; // 2 rows, 3 columns
// Printing 2D array elements
for(int i = 0; i < 2; i++) {
for(int j = 0; j < 3; j++) {
printf("%d ", matrix[i][j]);
}
printf("\n"); // Newline after each row
}
return 0;
}
Output:
1 2 3
4 5 6