From 80b330f482e88fc2f3d3f2f41c590f4867133c4e Mon Sep 17 00:00:00 2001
From: VIliam <viliam.dzubara@student.tuke.sk>
Date: Fri, 31 Jan 2025 19:20:13 +0100
Subject: [PATCH] skuska2

---
 sk2/calculator.c | 15 +++++++++------
 1 file changed, 9 insertions(+), 6 deletions(-)

diff --git a/sk2/calculator.c b/sk2/calculator.c
index 53094c2..3090755 100644
--- a/sk2/calculator.c
+++ b/sk2/calculator.c
@@ -26,11 +26,11 @@ double odcitaj(double a, double b) { return a - b; }
 double nasob(double a, double b) { return a * b; }
 double del(double a, double b) { return a / b; }
 
-double sinus(double x) { return sin(x); }
-double cosinus(double x) { return cos(x); }
-double odmocnina(double x) { return sqrt(x); }
-double mocnina(double zaklad, double exponent) { return pow(zaklad, exponent); }
-double logaritmus(double x) { return log(x); }
+double sin(double x) { return sin(x); }
+double cos(double x) { return cos(x); }
+double sqrt(double x) { return sqrt(x); }
+double pow(double zaklad, double exponent) { return pow(zaklad, exponent); }
+double log(double x) { return log(x); }
 
 // Funkcia na konverziu infixového výrazu na postfixový (Shunting-yard algoritmus)
 void infix_na_postfix(const char *infix, char *postfix) {
@@ -69,7 +69,9 @@ void infix_na_postfix(const char *infix, char *postfix) {
 double vyhodnot_postfix(const char *postfix) {
     double stack[100];
     int top = -1;
-    char *token = strtok(strdup(postfix), " ");
+    char *postfix_copy = malloc(strlen(postfix) + 1);
+    strcpy(postfix_copy, postfix);
+    char *token = strtok(postfix_copy, " ");
 
     while (token) {
         if (isdigit(token[0]) || (token[0] == '-' && isdigit(token[1]))) {
@@ -87,5 +89,6 @@ double vyhodnot_postfix(const char *postfix) {
         }
         token = strtok(NULL, " ");
     }
+    free(postfix_copy);
     return stack[top];
 }