From 015ae09f7d51ddb2939b050677f4cc4d9c5641ca Mon Sep 17 00:00:00 2001
From: Oleksandr Hryshchenko <oleksandr.hryshchenko@student.tuke.sk>
Date: Thu, 1 Apr 2021 13:10:17 +0000
Subject: [PATCH] =?UTF-8?q?=D0=98=D0=B7=D0=BC=D0=B5=D0=BD=D0=B8=D1=82?=
 =?UTF-8?q?=D1=8C=20'du4/program.c'?=
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raz
---
 du4/program.c | 76 +++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 76 insertions(+)

diff --git a/du4/program.c b/du4/program.c
index f0aeabc..22ad1c1 100644
--- a/du4/program.c
+++ b/du4/program.c
@@ -1,5 +1,81 @@
 #include <stdio.h>
+#include <stdlib.h>
+#include <ctype.h>
+#include <sting.h>
+#include <stdbool.h>
 
 int main(){
+    char* input = (char*) calloc (100, sizeof(char));
+    char symbol = '\0';
+    int counter = 0;
+    int operation = 0;
+    char* number1 = (char*) calloc (25, sizeof(char));
+    char* number2 = (char*) calloc (25, sizeof(char));
+    char* result = (char*) calloc (30, sizeof(char));
+    char* ptr;
+    bool equals = false;
 
+    for(int i = 0; fgets(input, 100, stdin); i++){
+        counter = 0;
+        operation = 0;
+        equals = false;
+        memset(number1, '\0', 25);
+        memset(number2, '\0', 25);
+
+        while (input[counter] != '\0'){
+            symbol = input[counter++];
+            while(isspace(symbol))
+                symbol = input[counter++];
+            switch(symbol){
+                case '+':
+                    operation = 1;
+                    break;
+                case '-':
+                    operation = 2;
+                    break;
+                case '*':
+                    operation = 3;
+                    break;
+                case '/':
+                    operation = 4;
+                    break;
+                case '=':
+                    equals = true;
+                    break;
+                default:
+                    if(isdigit(symbol) || symbol == '.'){
+                        if(operation == 0) 
+                            number1 += symbol;
+                        else if (!equals)
+                            number2 += symbol;
+                        else
+                            result += symbol;
+                    }
+                    else if(!isdigit(symbol)){
+                        printf("CHYBA");
+                        goto LABEL;
+                    }
+                    break; 
+            }
+        }
+        LABEL:
+        switch(operation){
+            case 1:
+                printf("%.s\n", (strtof(number1, &ptr) + strtof(number2, &ptr) == strtof(result, &ptr)) ? "OK" : "ZLE");
+                break;
+            case 2:
+                printf("%.s\n", strtof(number1, &ptr) - strtof(number2, &ptr) == strtof(result, &ptr)) ? "OK" : "ZLE");
+                break
+            case 3:
+                printf("%.s\n", strtof(number1, &ptr) * strtof(number2, &ptr) == strtof(result, &ptr)) ? "OK" : "ZLE");
+                break;
+            case 4:
+                printf("%.s\n", strtof(number1, &ptr) / strtof(number2, &ptr) == strtof(result, &ptr)) ? "OK" : "ZLE");
+                break;
+            default:
+                printf("CHYBA");
+        }
+    }
+
+    return 0;
 }