README.md

Matrix Vector Operations in C++

Description

This project demonstrates basic operations on a 2D matrix using vectors in C++. The main functionalities include creating a matrix based on user input, displaying the matrix, and modifying the matrix values. The project is suitable for beginners learning about dynamic data structures and input/output operations in C++.

Features

• Dynamic matrix creation based on user input for rows and columns.
• Input values for each element of the matrix.
• Display the initial matrix.
• Modify the matrix elements based on new user input.
• Display the modified matrix.

Code Snippets

Matrix Creation and Initial Display:

#include <iostream>
#include <vector>

int main() {
    int fil, col;
    int val = 0;
    std::vector< std::vector<int> > matriz;

    std::cout << "FILAS: ";
    std::cin >> fil;
    std::cout << "COLUMNAS: ";
    std::cin >> col;

    for (int i = 0; i < fil; i++) {
        std::vector<int> v1;
        for (int j = 0; j < col; j++) {
            std::cout << "Valor [" << i << "][" << j << "] = ";
            std::cin >> val;
            v1.push_back(val);
        }
        matriz.push_back(v1);
    }

    for (int i = 0; i < matriz.size(); i++) {
        for (int j = 0; j < matriz[i].size(); j++) {
            std::cout << matriz[i][j] << " ";
        }
        std::cout << std::endl;
    }

    system("pause");
}

Matrix Modification and Display:

    std::cout << "\nALTERANDO LOS ELEMENTOS!!!" << std::endl;
    int nuevos;
    for (int i = 0; i < fil; i++) {
        for (int j = 0; j < col; j++) {
            std::cout << "Valor [" << i << "][" << j << "] = ";
            std::cin >> nuevos;
            matriz[i][j] = nuevos;
        }
    }

    for (int i = 0; i < matriz.size(); i++) {
        for (int j = 0; j < matriz[i].size(); j++) {
            std::cout << matriz[i][j] << " ";
        }
        std::cout << std::endl;
    }

    system("pause");
}

How to Run

1. Compile the code using a C++ compiler, e.g., g++ -o matrix matrix_vector_ops.cpp.
2. Run the executable, e.g., ./matrix.
3. Follow the on-screen prompts to input the matrix dimensions and values.
4. View the initial matrix.
5. Modify the matrix values as prompted and view the updated matrix.

Requirements

• C++ compiler
• Standard Library