tt

commit 7c46a4947b705412738793ef1cbf4e01d390f9d2
parent 080c5ede54c8eba9f5c4496c6a0841578342589f
Author: Andrew Laack <andrew@laack.co>
Date:   Wed,  9 Sep 2026 20:53:08 -0500

Added makefile

Diffstat:
A
Makefile
 | 
11
+++++++++++
A
main.c
 | 
22
++++++++++++++++++++++

2 files changed, 33 insertions(+), 0 deletions(-)
diff --git a/Makefile b/Makefile
@@ -0,0 +1,11 @@
+build:
+	tcc main.c -o tt
+
+run: build
+	./tt 60
+
+clean:
+	rm tt
+
+
+full: build run clean
diff --git a/main.c b/main.c
@@ -0,0 +1,22 @@
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#define USAGE_STRING "usage: tt {num_minutes}\n"
+#define INVALID_INPUT -1
+
+int main(int argc, char** argv) {
+    if (argc <= 1 || argc > 2) {
+        printf(USAGE_STRING);
+        return INVALID_INPUT;
+    }
+
+    char *end;
+    long value = strtol(argv[1], &end, 10); 
+    if (end == argv[1] || *end != '\0' || errno == ERANGE) {
+        printf("Invalid number: %s\n", argv[1]);
+        return INVALID_INPUT;
+    }
+
+    return 0;
+}