From dc6a3a0804fa46ab106876146f40212eaf36b04a Mon Sep 17 00:00:00 2001
From: inex <gitea@inex.rocks>
Date: Fri, 13 Mar 2020 13:09:08 +0300
Subject: [PATCH] Add division by zero habdling, fixes #4

---
 task2/task2.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/task2/task2.c b/task2/task2.c
index ca635db..85a9726 100644
--- a/task2/task2.c
+++ b/task2/task2.c
@@ -104,6 +104,9 @@ int parse(char *s, STACK* stack) {
 		add(stack);
 		return 0;
 	} else if (*s == '/') {
+		if ((stack -> st[(stack -> cnt)-1]) == 0) {
+			return -2;
+		}
 		divide(stack);
 		return 0;
 	} else if (*s == 'x') {
@@ -130,6 +133,9 @@ int main(int argc, char **argv) {
 		if (error == -1) {
 			fprintf(stderr, "Error parsing operand.\n");
 			return(1);
+		} else if (error == -2) {
+			fprintf(stderr, "Division by zero!");
+			return(2);
 		}
 	}
 	int i;