From 4b33f0c0916c070d99b1c0251e3e574621513b9b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Tom=C3=A1=C5=A1=20Vl=C4=8Dek?= <tomas.vlcek@student.tuke.sk>
Date: Thu, 19 Mar 2026 01:05:25 +0000
Subject: [PATCH] Aktualizovat du3/program.c

---
 du3/program.c | 43 +++++++++++--------------------------------
 1 file changed, 11 insertions(+), 32 deletions(-)

diff --git a/du3/program.c b/du3/program.c
index bffb5ec..77c8c8c 100644
--- a/du3/program.c
+++ b/du3/program.c
@@ -7,7 +7,7 @@
 #define SIZE 128
 
 //kontrola, ze ci vycitane informacie su aritmeticky spravne
-//VRACIA: int: -1 (CHYBA), 0 (False), (True)
+//VRACIA: int: -1 (CHYBA), 0 (False), 1 (True)
 float IsArithCorrect(float num1, float num2, char* op, float result)
 {
 
@@ -62,12 +62,16 @@ int main()
 
             for (int i = 0; strBuffer[i] != '\0'; i++)
             {
-                if (isspace() != 0)
+                else if (isspace() != 0)
                 {
                     continue;
                 }
-                if (isdigit(strBuffer[i]) != 0 || strBuffer[i] == '.') 
+                else if (isdigit(strBuffer[i]) != 0 || strBuffer[i] == '.') 
                 {
+                    //cislo sa bude zapisovat podla toho, kde sme pri citani riadku...
+                    //ak nenasiel ani arit. znamienko = cislo patri ku prvemu operandu (num1)
+                    //ak nasiel arit. znamienko ale NIE este symbol '=', tak cislo patri ku druhemu operandu (num2)
+                    //inak ak ma vsetko, tak zvysne nacitane cisla z riadku mozu byt vyluc. metodou len sucastou vysledku
                     if (op1 == 'N')
                     {
                         strncat(num1Temp, &strBuffer[i], 1);
@@ -81,15 +85,13 @@ int main()
                         strncat(resultTemp, &strBuffer[i], 1);
                     }
                 }
-                 //ak je to nejaky printable symbol ('*/-,:./), skontroluj ci to nie je artimeticke znamienko alebo desatinna bodka (a udel im vynimku)
-                //AK NIE, povazuj za riadok neplatny...
-                if (strBuffer[i] == '=')
+                else if (strBuffer[i] == '=')
                 {
                     foundEqualSign = true;
                     continue;
                 }
 
-                if (strBuffer[i] == '+' || strBuffer[i] == '-' || strBuffer[i] == '/' || strBuffer[i] == '*')
+                else if (strBuffer[i] == '+' || strBuffer[i] == '-' || strBuffer[i] == '/' || strBuffer[i] == '*')
                 {
                     //predbezna kontrola, ze ci sme doteraz daco vobec nacitavali
                     if (op1 == 'N' || strBuffer[0] == '\0')
@@ -98,37 +100,14 @@ int main()
                     }
                     op1 = strBuffer[i];
                 }
-                else if (strBuffer[i] == '.')
-                {
-                    //zisti, kde treba zapisat desatinnu bodku
-                    switch (writeIntoArrayNum)
-                    {   
-                        case 1:
-                        strncat(num1Temp, &strBuffer[i], 1);
-                        break;
-
-                        case 2:
-                        strncat(num2Temp, &strBuffer[i], 1);
-                        break;
-
-                        case 3:
-                        strncat(resultTemp, &strBuffer[i], 1);
-                        break;
-                    }
-                }
-                 else
+                else
                 {
                     isLineInvalid = true;
                     break;
                 }
                     
-
-                if (isalpha(strBuffer[i]) != 0)
-                {
-                    isLineInvalid = true;
-                    break;
-                }
              }
+            
             float num1 = strtof(num1Temp, &strtofEndPtr);
             float num2 = strtof(num2Temp, &strtofEndPtr);
             float resultNum = strtof(resultTemp, &strtofEndPtr);