main.c: Do not allow creating zero planets

Signed-off-by: Timo Kokkonen <kaapeli@itanic.dy.fi>

diff --git a/main.c b/main.c
index be927c7ae1518cea769236b6f5f93c19fcae4f28..88efd2179e76dd40a5f9a62d3ff482b65a2537bf 100644 (file)
--- a/main.c
+++ b/main.c
@@ -327,6 +327,10 @@ int main(int argc, char *argv[])
        if (argc >= 2)
                planets = atoi(argv[1]);
 
+       if (planets < 1)
+               planets = 1;
+
+
        if (argc >= 3)
                total_mass = atof(argv[2]);