From 104b94822feff061026d453cbfd1b1243676732a Mon Sep 17 00:00:00 2001
From: Matej Hajduk <matej.hajduk@student.tuke.sk>
Date: Tue, 21 Oct 2025 18:51:25 +0200
Subject: [PATCH] a1

---
 a1/program.c | 73 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 73 insertions(+)
 create mode 100644 a1/program.c

diff --git a/a1/program.c b/a1/program.c
new file mode 100644
index 0000000..79062c0
--- /dev/null
+++ b/a1/program.c
@@ -0,0 +1,73 @@
+#include <stdio.h>
+#include <string.h>
+
+#define MAX 101
+
+// funkcia, ktorá vracia zodpovedajúcu zatváraciu zátvorku
+char expected_close(char open) {
+    switch (open) {
+        case '(': return ')';
+        case '{': return '}';
+        case '[': return ']';
+        case '<': return '>';
+        default: return 0;
+    }
+}
+
+int main(void) {
+    char line[MAX];
+    char stack[MAX];
+    int pos[MAX]; // pozície otvorených zátvoriek
+    int top = -1; // index vrcholu zásobníka
+
+    // načítanie jedného riadku
+    if (fgets(line, MAX, stdin) == NULL)
+        return 0;
+
+    // odstrániť znak nového riadku, ak je prítomný
+    line[strcspn(line, "\n")] = '\0';
+
+    printf("Read: %s\n", line);
+
+    int ok = 1;
+    int length = strlen(line);
+
+    for (int i = 0; i < length; i++) {
+        char ch = line[i];
+
+        // ak je otváracia zátvorka
+        if (ch == '(' || ch == '{' || ch == '[' || ch == '<') {
+            top++;
+            stack[top] = ch;
+            pos[top] = i + 1; // indexovanie od 1
+        }
+        // ak je zatváracia zátvorka
+        else if (ch == ')' || ch == '}' || ch == ']' || ch == '>') {
+            if (top < 0) {
+                printf("Unexpected closing bracket %c in %d\n", ch, i + 1);
+                ok = 0;
+                break;
+            }
+
+            char last_open = stack[top];
+            char expected = expected_close(last_open);
+            if (ch != expected) {
+                printf("Crossed bracket %c in %d, expected %c\n", ch, i + 1, expected);
+                ok = 0;
+                break;
+            }
+            top--;
+        }
+    }
+
+    if (ok && top >= 0) {
+        printf("Missing closing bracket for %c from %d\n", stack[top], pos[top]);
+        ok = 0;
+    }
+
+    if (ok)
+        printf("All brackets OK\n");
+
+    return 0;
+}
+