Some of the Matrix stuff

matrix.c

@@ -0,0 +1,77 @@
+#include "matrix.h"
+#include <stdlib.h>
+#include <stdio.h>
+
+Matrix* matrix_create(int rows, int columns) {
+
+    // allocate memory for the matrix
+    Matrix* matrix = malloc(sizeof(Matrix));
+
+    // set size variables to the correct size
+    matrix->rows = rows;
+    matrix->columns = columns;
+
+    // allocate memory for the numbers (2D-Array)
+    matrix->numbers = malloc(sizeof(double*) * rows);
+    for (int i = 0; i < rows; i++) {
+        matrix->numbers[i] = malloc(sizeof(double) * columns);
+    }
+
+    // return the pointer to the allocated memory
+    return matrix;
+}
+
+void matrix_fill(Matrix* matrix, double value) {
+
+    // simple for loop to populate the 2D-array with a value
+    for (int i = 0; i < matrix->rows; i++) {
+        for (int j = 0; j < matrix->columns; j++) {
+            matrix->numbers[i][j] = value;
+        }
+    }
+}
+
+void matrix_free(Matrix* matrix) {
+
+    // de-allocate every column
+    for (int i = 0; i < matrix->rows; i++) {
+        free(matrix->numbers[i]);
+    }
+
+    // de-allocate the rows
+    free(matrix->numbers);
+
+    // de-allocate the matrix
+    free(matrix);
+}
+
+void matrix_print(Matrix *matrix) {
+
+    // print the dimensions of the matrix
+    printf("Rows: %d, Columns: %d", matrix->rows, matrix->columns);
+
+    // loop through all values and format them into the correct matrix representation
+    for (int i = 0; i < matrix->rows; i++) {
+        for (int j = 0; j < matrix->columns; j++) {
+            printf("%lf ", matrix->numbers[i][j]);
+        }
+        printf("\n");
+    }
+}
+
+Matrix* matrix_copy(Matrix *matrix) {
+
+    // create another matrix of the same size
+    Matrix* copy_of_matrix = matrix_create(matrix->rows, matrix->columns);
+
+    // copy the values from the original matrix into the copy
+    for (int i = 0; i < matrix->rows; i++) {
+        for (int j = 0; j < matrix->columns; j++) {
+            copy_of_matrix->numbers[i][j] = matrix->numbers[i][j];
+        }
+    }
+
+    // return the pointer to the copy
+    return copy_of_matrix;
+}
+

matrix.h

@@ -0,0 +1,15 @@
+#pragma once
+
+typedef struct {
+    int rows, columns;
+    double **numbers;
+} Matrix;
+
+Matrix* matrix_create(int rows, int columns);
+void matrix_fill(Matrix* matrix, double value);
+void matrix_free(Matrix* matrix);
+void matrix_print(Matrix *matrix);
+Matrix* matrix_copy(Matrix *matrix);
+
+
+