From dde62454eaa649914ff1c1fae851083d939edc5d Mon Sep 17 00:00:00 2001
From: Bob Polis <rpb.polis@avans.nl>
Date: Sat, 11 Jun 2022 23:08:39 +0200
Subject: [PATCH] Added argument checks to forbid negative input

---
 src/main.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/main.cpp b/src/main.cpp
index 89f84f5..1bf07a4 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -63,21 +63,25 @@ int main(int argc, char* argv[]) {
                 case 'u':
                     valid += upper;
                     min_upper = std::atoi(optarg);
+                    if (min_upper < 0) throw std::runtime_error("minimum amout of upper case must be zero or more");
                     noflags = false;
                     break;
                 case 'l':
                     valid += lower;
                     min_lower = std::atoi(optarg);
+                    if (min_upper < 0) throw std::runtime_error("minimum amout of lower case must be zero or more");
                     noflags = false;
                     break;
                 case 'd':
                     valid += digits;
                     min_digits = std::atoi(optarg);
+                    if (min_upper < 0) throw std::runtime_error("minimum amout of digits must be zero or more");
                     noflags = false;
                     break;
                 case 's':
                     valid += symbols;
                     min_symbols = std::atoi(optarg);
+                    if (min_upper < 0) throw std::runtime_error("minimum amout of symbols must be zero or more");
                     noflags = false;
                     break;
                 case 'S':