From 99861f5cb0fded6e0f5e05a91381bf2eb663e8af Mon Sep 17 00:00:00 2001
From: justuser-31 <kirillmoscow2@gmail.com>
Date: Fri, 9 May 2025 10:42:27 +0300
Subject: [PATCH] up

---
 .gitmodules                       |  3 +
 STEP1_Basics/6_Files/.gitignore   |  1 +
 STEP1_Basics/6_Files/c_cross_pack |  1 +
 STEP1_Basics/6_Files/main.c       | 91 +++++++++++++++++++++++++++++++
 4 files changed, 96 insertions(+)
 create mode 100644 STEP1_Basics/6_Files/.gitignore
 create mode 160000 STEP1_Basics/6_Files/c_cross_pack
 create mode 100644 STEP1_Basics/6_Files/main.c

diff --git a/.gitmodules b/.gitmodules
index 350734e..3314ec9 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -4,3 +4,6 @@
 [submodule "STEP1_Basics/5_Recursion/c_cross_pack"]
 	path = STEP1_Basics/5_Recursion/c_cross_pack
 	url = ssh://git@git.del.pw:2222/justuser-31/c_cross_pack.git
+[submodule "STEP1_Basics/6_Files/c_cross_pack"]
+	path = STEP1_Basics/6_Files/c_cross_pack
+	url = https://gitea.del.pw/justuser-31/c_cross_pack.git
diff --git a/STEP1_Basics/6_Files/.gitignore b/STEP1_Basics/6_Files/.gitignore
new file mode 100644
index 0000000..f73f309
--- /dev/null
+++ b/STEP1_Basics/6_Files/.gitignore
@@ -0,0 +1 @@
+file
diff --git a/STEP1_Basics/6_Files/c_cross_pack b/STEP1_Basics/6_Files/c_cross_pack
new file mode 160000
index 0000000..2f6bba5
--- /dev/null
+++ b/STEP1_Basics/6_Files/c_cross_pack
@@ -0,0 +1 @@
+Subproject commit 2f6bba5ce7e8069438a39b4e1a73df1cea899378
diff --git a/STEP1_Basics/6_Files/main.c b/STEP1_Basics/6_Files/main.c
new file mode 100644
index 0000000..6db50a8
--- /dev/null
+++ b/STEP1_Basics/6_Files/main.c
@@ -0,0 +1,91 @@
+#include <stdio.h>
+#include <stdbool.h>
+
+#include "c_cross_pack/libs/string.h"
+
+int main() {
+	int matrix[2][2];
+	int a, b;
+
+	// Scan
+	printf("Enter a: "); scanf("%d", &a);
+	printf("Enter b: "); scanf("%d", &b);
+
+	matrix[0][0] = a; matrix[0][1] = a + 1;
+	matrix[1][0] = b; matrix[1][1] = b + 1;
+
+	// Format strings
+	string first = strInit(int2Str(&matrix[0][0]));
+	strAdd(&first, " ");
+	strAdd(&first, int2Str(&matrix[0][1]));
+	string second = strInit(int2Str(&matrix[1][0]));
+	strAdd(&second, " ");
+	strAdd(&second, int2Str(&matrix[1][1]));
+
+	// Write data
+	FILE* fptr = fopen("file", "w");
+	fprintf(fptr, first);
+	fprintf(fptr, "\n");
+	fprintf(fptr, second);
+	fprintf(fptr, "\n");
+	fclose(fptr);
+
+	string rawFirst = strInit("");
+	string rawSecond = strInit("");
+	int newMatrix[2][2];
+
+	// Read new values
+	fptr = fopen("file", "r");
+	string buffer = strInit("");
+	strResize(&buffer, 128);
+	bool isFirst = true;
+	while (fgets(buffer, 128, fptr)) {
+		//printf("%s", buffer);
+		if (isFirst) {
+			strAdd(&rawFirst, buffer);
+			isFirst = false;
+		}
+		else {
+			strAdd(&rawSecond, buffer);
+		}
+	}
+	fclose(fptr);
+
+	// Parse first values pairs
+	isFirst = true;
+	char* token = strtok(rawFirst, " ");
+	while (token)
+	{
+		if (isFirst) {
+			newMatrix[0][0] = atoi(token);
+			isFirst = false;
+		}
+		else {
+			newMatrix[0][1] = atoi(token);
+		}
+		token = strtok(NULL, " ");
+	}
+	// Parse first values pairs
+	isFirst = true;
+	token = strtok(rawSecond, " ");
+	while (token)
+	{
+		if (isFirst) {
+			newMatrix[1][0] = atoi(token);
+			isFirst = false;
+		}
+		else {
+			newMatrix[1][1] = atoi(token);
+		}
+		token = strtok(NULL, " ");
+	}
+
+	printf("\nOriginal matrix:\n"
+	"[[%d, %d], [%d, %d]]\n"
+	"Readed matrix:\n"
+	"[[%d, %d], [%d, %d]]\n",
+	matrix[0][0], matrix[0][1], matrix[1][0], matrix[1][1],
+	newMatrix[0][0], newMatrix[0][1], newMatrix[1][0], newMatrix[1][1]);
+
+	return 0;
+}