Update .gitignore

.gitignore

@@ -1,3 +1,4 @@
 src/agg
 bin
 obj
+AGENTS.md

src/agg.c

@@ -85,6 +85,10 @@ int main(void) {
   int playtime;
   printf ("\nHow long would you like to play for? Answer in seconds.\n");
   scanf ("%d", &playtime);
+  if (playtime < 1) {
+    printf ("Error! You must select at least one second.\n");
+    exit(1);
+  }
 
   int number_length;
   printf ("Please enter maximum possible number\n");
@@ -152,12 +156,12 @@ int main(void) {
   if (score >= 1) {
     printf ("Great job, %s!\n", username);
   } else {
-    printf ("try again!, %s.\n", username);
+    printf ("Try again!, %s.\n", username);
   }
   if (accuracytype == 1) {
-    printf ("you got an accuracy of %d%%!\n", (int)accuracy);
+    printf ("You got an accuracy of %d%%!\n", (int)accuracy);
   } else {
-    printf ("you got an accuracy of %g%%!\n", accuracy);
+    printf ("You got an accuracy of %g%%!\n", accuracy);
   }
 
   return 0;