Program 35 - CSU1128 - CSE 2026 - Shoolini University

Program to take the matrix size and then take the value of matrix entered by the user and print them. Example: 2 2 |1 2 3 4| = |1 2 3 4|

Explanation

The program takes the size of a matrix and the values of the matrix from the user, then prints the matrix.

Header

The code begins with including the standard input-output header file using #include <stdio.h>.

Variable Declaration

The main() function is defined, and several variables are declared:

int d: Stores the number of rows in the matrix.
int n: Stores the number of columns in the matrix.
int e[d][n]: Declares a 2D array with d rows and n columns to hold the matrix values.

Program Description

The program prints a description message for the user to understand its functionality.

User Input

The user is prompted to enter the number of rows and columns, and then the elements of the matrix:

printf("Enter the number of rows: ");: Prompts the user to enter the number of rows.
scanf("%d", &d);: Reads the number of rows and stores it in d.
printf("Enter the number of columns: ");: Prompts the user to enter the number of columns.
scanf("%d", &n);: Reads the number of columns and stores it in n.
int e[d][n];: Declares a 2D array with d rows and n columns.
printf("Enter the elements of the matrix:\n");: Prompts the user to enter the elements of the matrix.
for (int i = 0; i < d; i++): Outer loop to iterate over each row.
for (int j = 0; j < n; j++): Inner loop to iterate over each column.
scanf("%d", &e[i][j]);: Reads each element of the matrix and stores it in the array.

Matrix Printing

The program prints the matrix:

for (int i = 0; i < d; i++): Outer loop to iterate over each row.
for (int j = 0; j < n; j++): Inner loop to iterate over each column.
printf("%d ", e[i][j]);: Prints each element of the matrix followed by a space.
printf("\n");: Prints a newline after each row.

Program End

The program ends with return 0; to indicate successful execution.

Code

                    
/*
 * -----------------------------------------------------------
 * Logic Building with Computer Programming (CSU1128)
 * Instructor: Dr. Pankaj Vaidya | Author: Divya Mohan
 * 
 * This code is a part of the educational initiative by dmj.one
 * with aim of empowering and inspiring learners in the field of
 * Computer Science and Engineering through the respective courses.
 * 
 * (c) 2022, Divya Mohan for dmj.one. All rights reserved.
 * -----------------------------------------------------------
 */

#include <stdio.h>
#include <string.h>
int main()
{
    printf("\n\n Program to take the matrix size and then take the value of matrix entered by the user and print them. Example: 2 2 |1 2 3 4| = |1 2 3 4| \n\n");

    // Read the number of rows and columns from the user
    printf("Enter the number of rows: ");
    int d;
    scanf("%d", &d);
    printf("Enter the number of columns: ");
    int n;
    scanf("%d", &n);

    // Declare a 2D array with d rows and n columns
    int e[d][n];

    // Read the elements of the matrix from the user
    printf("Enter the elements of the matrix:\n");
    for (int i = 0; i < d; i++)
    {
        for (int j = 0; j < n; j++)
        {
            scanf("%d", &e[i][j]);
        }
    }

    // Print the values of the array
    for (int i = 0; i < d; i++)
    {
        for (int j = 0; j < n; j++)
        {
            printf("%d ", e[i][j]);
        }
        printf("\n"); // Print a newline after each row
    }

    return 0;
}

Output

Program to take the matrix size and then take the value of matrix entered by the user and print them. Example: 2 2 |1 2 3 4| = |1 2 3 4|

Enter the number of rows: 2
Enter the number of columns: 2
Enter the elements of the matrix:
5 6 3 2
5 6
3 2