From c83069ee28df1940fc2d12d44420677b64df6437 Mon Sep 17 00:00:00 2001
From: Anzhelika Nikolaieva <anzhelika.nikolaieva@student.tuke.sk>
Date: Fri, 17 Mar 2023 20:36:03 +0000
Subject: [PATCH] Update 'du4/program.c'

---
 du4/program.c | 95 +++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 95 insertions(+)

diff --git a/du4/program.c b/du4/program.c
index e69de29..6b4ddaf 100644
--- a/du4/program.c
+++ b/du4/program.c
@@ -0,0 +1,95 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <math.h>
+
+using System;
+
+class Program {
+    static void Main(string[] args) {
+        int ch = Console.Read();
+        string priklad = "";
+        int count = 0;
+
+        while (true) {
+            priklad += (char)ch;
+            if (ch == '\n') {
+                count++;
+            }
+            ch = Console.Read();
+            if ((priklad[priklad.Length - 1] == '\n' && ch == '\n') || ch == -1) {
+                break;
+            }
+        }
+
+        string start = priklad;
+        string end = null;
+
+        for (int c = 0; c < count; c++) {
+            int skip = 0, z = 0;
+
+            for (int idx = 0; start[idx] != '\n'; idx++) {
+                if (start[idx] == '+' || start[idx] == '-' || start[idx] == '*' || start[idx] == '/') {
+                    z = 1;
+                }
+                if ((start[idx] < '0' || start[idx] > '9') && start[idx] != ' ' && start[idx] != '=' && start[idx] != '+' && start[idx] != '-' && start[idx] != '*' && start[idx] != '/' && start[idx] != '.') {
+                    skip = 1;
+                    Console.WriteLine("CHYBA");
+                    while (start[0] != '\n') {
+                        start = start.Substring(1);
+                    }
+                    start = start.Substring(1);
+                    break;
+                }
+            }
+
+            if (skip == 1) {
+                continue;
+            }
+            if (z == 0) {
+                while (start[0] != '\n') {
+                    start = start.Substring(1);
+                }
+                start = start.Substring(1);
+                Console.WriteLine("CHYBA");
+                continue;
+            }
+            float num1 = float.Parse(start, out end);
+            if (end == start) {
+                Console.WriteLine("KONIEC");
+            }
+            while (start[0] != '+' && start[0] != '-' && start[0] != '/' && start[0] != '*') {
+                start = start.Substring(1);
+            }
+            char znak = start[0];
+            start = start.Substring(1);
+
+            float num2 = float.Parse(start, out end);
+            start = end;
+            while ((start[0] < '0' || start[0] > '9') && start[0] != '-') {
+                start = start.Substring(1);
+            }
+
+            float vysledok2 = float.Parse(start, out end);
+            start = end;
+            start = start.Substring(1);
+            float vysledok = 0;
+
+            if (znak == '-') {
+                vysledok = num1 - num2;
+            } else if (znak == '+') {
+                vysledok = num1 + num2;
+            } else if (znak == '*') {
+                vysledok = num1 * num2;
+            } else if (znak == '/') {
+                vysledok = num1 / num2;
+            }
+            vysledok = (float)Math.Round(vysledok * 100) / 100;
+            if (Math.Abs(vysledok2 - vysledok) < 0.001) {
+                Console.WriteLine("OK");
+            } else {
+                Console.WriteLine("ZLE");
+            }
+        }
+    }
+}
\ No newline at end of file