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APC-S-008.c

Problem Statement

Write a program to print the sum of two matrix as input given by the user.

Metadata

Property Detail
Author Amit Dutta amitdutta4255@gmail.com
Date 12 Dec 2025
License MIT License (See the LICENSE file for details)
Difficulty Beginner (index: 1 / 10)

Concepts

Beta Feature

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  • Recursion
  • Sorting (likely)
  • Sorting (possible)
  • Iteration

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Source Code

#include <stdio.h>

int main()
{
    int rows, cols, i, j;
    printf("Enter the number of rows and columns: ");
    scanf("%d %d", &rows, &cols);

    int a[rows][cols], b[rows][cols], c[rows][cols];

    printf("Enter the elements of matrix A (%d x %d): \n", rows, cols);
    for (i = 0; i < rows; i++)
        for (j = 0; j < cols; j++)
        {
            printf("Position %d%d: ", i, j);
            scanf("%d", &a[i][j]);
        }
    printf("\nMatrix A: \n");
    for (i = 0; i < rows; i++)
    {
        for (j = 0; j < cols; j++)
            printf("%d  ", a[i][j]);
        printf("\n");
    }

    printf("\nEnter the elements of matrix B(%d x %d): \n", rows, cols);
    for (i = 0; i < rows; i++)
        for (j = 0; j < cols; j++)
        {
            printf("Position %d%d: ", i, j);
            scanf("%d", &b[i][j]);
        }
    printf("\nMatrix B: \n");
    for (i = 0; i < rows; i++)
    {
        for (j = 0; j < cols; j++)
            printf("%d  ", b[i][j]);
        printf("\n");
    }

    for (i = 0; i < rows; i++)
        for (j = 0; j < cols; j++)
            c[i][j] = a[i][j] + b[i][j];

    printf("\nResult Matrix: \n");
    for (i = 0; i < rows; i++)
    {
        for (j = 0; j < cols; j++)
            printf("%d  ", c[i][j]);
        printf("\n");
    }

    return 0;
}

Explanation

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    You are explaining a C programming code to a beginner.

    STRICT RULES:

    - Only use the given code. Do NOT assume anything not present.

    - Do NOT add extra examples.

    - Keep explanation clear and short.

    - If something is unclear, say "Not clear from code".

    - Follow the exact format below. Do NOT change headings.

    FORMAT:

    [START]

    ## What it does

    (Explain the overall purpose in 1-2 sentences)

    ## Step-by-step

    (Explain how the code works in steps, simple language)

    ## Key Concepts

    (List concepts like loop, condition, function, etc.)

    ## Notes

    (Mention any limitations, errors, or assumptions)

    [END]

    CODE (APC-S-008.c):

    #include <stdio.h>

    int main()
    {
        int rows, cols, i, j;
        printf("Enter the number of rows and columns: ");
        scanf("%d %d", &rows, &cols);

        int a[rows][cols], b[rows][cols], c[rows][cols];

        printf("Enter the elements of matrix A (%d x %d): \n", rows, cols);
        for (i = 0; i < rows; i++)
            for (j = 0; j < cols; j++)
            {
                printf("Position %d%d: ", i, j);
                scanf("%d", &a[i][j]);
            }
        printf("\nMatrix A: \n");
        for (i = 0; i < rows; i++)
        {
            for (j = 0; j < cols; j++)
                printf("%d  ", a[i][j]);
            printf("\n");
        }

        printf("\nEnter the elements of matrix B(%d x %d): \n", rows, cols);
        for (i = 0; i < rows; i++)
            for (j = 0; j < cols; j++)
            {
                printf("Position %d%d: ", i, j);
                scanf("%d", &b[i][j]);
            }
        printf("\nMatrix B: \n");
        for (i = 0; i < rows; i++)
        {
            for (j = 0; j < cols; j++)
                printf("%d  ", b[i][j]);
            printf("\n");
        }

        for (i = 0; i < rows; i++)
            for (j = 0; j < cols; j++)
                c[i][j] = a[i][j] + b[i][j];

        printf("\nResult Matrix: \n");
        for (i = 0; i < rows; i++)
        {
            for (j = 0; j < cols; j++)
                printf("%d  ", c[i][j]);
            printf("\n");
        }

        return 0;
    }