116 lines
2.9 KiB
C
116 lines
2.9 KiB
C
#include "types.h"
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#include <stdio.h>
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void print_2d(int matrix[MAT_ROWS][MAT_COLUMNS])
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{
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for (int row = 0; row < MAT_ROWS; row++) {
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for (int column = 0; column < MAT_COLUMNS; column++) {
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printf("%d ", matrix[row][column]);
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}
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printf("\n");
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}
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}
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bool save_to(FILE *output, int matrix[MAT_ROWS][MAT_COLUMNS])
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{
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for (int row = 0; row < MAT_ROWS; row++) {
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for (int column = 0; column < MAT_COLUMNS; column++) {
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if (fprintf(output, "%d ", matrix[row][column]) < 0) {
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return false;
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}
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}
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if (fprintf(output, "\n") < 0) {
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return false;
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}
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}
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// TODO: return true when successful
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return true;
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}
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bool save_to_file(const char *filename, int matrix[MAT_ROWS][MAT_COLUMNS])
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{
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// FILE * is the type used to represent files and data streams
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FILE *output = fopen(filename, "w");
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if (output == NULL) {
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return false;
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}
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// TODO: 1. open the destination file
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// TODO: 2. validate that the stream has opened correctly
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bool result = save_to(output, matrix);
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// TODO: 4. Don't forget to close the file!
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fclose(output);
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return result;
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}
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bool load_from(FILE *input, int matrix[MAT_ROWS][MAT_COLUMNS])
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{
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// TODO: Read the matrix items from the file into the matrix
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int row = 0;
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int column = 0;
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int currNumber = 0;
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while (fscanf(input, "%d", &currNumber)) {
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matrix[row][column] = currNumber;
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if (++column >= MAT_COLUMNS && row < MAT_ROWS) {
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row++;
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column = 0;
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} else if (row >= MAT_ROWS) {
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break;
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}
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}
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// TODO: return true when successful
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return true;
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}
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bool load_from_file(const char *filename, int matrix[MAT_ROWS][MAT_COLUMNS])
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{
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FILE *input = fopen(filename, "r");
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if (input == NULL) {
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return false;
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}
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// TODO: 1. open the source file
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// TODO: 2. validate that the stream has opened correctly
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bool result = load_from(input, matrix);
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// TODO: 4. Don't forget to close the file!
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fclose(input);
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return result;
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}
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#ifndef TEST_BUILD
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int main(int argc, char *argv[])
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{
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// Create and initialize a matrix
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int matrix[MAT_ROWS][MAT_COLUMNS];
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for (int row = 0; row < MAT_ROWS; row++) {
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for (int column = 0; column < MAT_COLUMNS; column++) {
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matrix[row][column] = (row + 1) * (column + 1);
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}
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}
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// Save the matrix to a file
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if (save_to_file(MAT_FILE_PATH, matrix) == false) {
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printf("Error during saving matrix to file!\n");
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return 1;
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}
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// Load matrix contents from a file
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int matrix_loaded[MAT_ROWS][MAT_COLUMNS];
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if (load_from_file(MAT_FILE_PATH, matrix_loaded) == false) {
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printf("Error during loading matrix from file!\n");
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return 1;
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}
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// Print the matrix contents
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print_2d(matrix_loaded);
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return 0;
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}
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#endif
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