From 132224e588a3c915acebfced6660c662b3667c1e Mon Sep 17 00:00:00 2001
From: Anton Dolozin <anton.dolozin@student.tuke.sk>
Date: Mon, 6 Oct 2025 16:30:53 +0200
Subject: [PATCH] Trying

---
 du3/program.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/du3/program.c b/du3/program.c
index 9dc2bef..1020523 100644
--- a/du3/program.c
+++ b/du3/program.c
@@ -66,6 +66,11 @@ void process_operations(struct stack* stack) {
             }
         } else {
             char *endptr;
+            if (line[0] == '.')
+            { printf("bad input\n");
+            return;
+            }
+            
             float val = strtof(line, &endptr);
             if (endptr == line) { 
                 printf("bad input\n");