1 files changed, 15 insertions, 15 deletions

diff --git a/plugins/check_users.c b/plugins/check_users.c
index 885c0dcf..f1e1c39d 100644
--- a/plugins/check_users.c
+++ b/plugins/check_users.c
@@ -55,13 +55,13 @@ const char *email = "devel@monitoring-plugins.org";
 
 #define possibly_set(a, b) ((a) == 0 ? (b) : 0)
 
-int process_arguments(int, char **);
-void print_help(void);
+static int process_arguments(int, char **);
+static void print_help(void);
 void print_usage(void);
 
-char *warning_range = NULL;
-char *critical_range = NULL;
-thresholds *thlds = NULL;
+static char *warning_range = NULL;
+static char *critical_range = NULL;
+static thresholds *thlds = NULL;
 
 int main(int argc, char **argv) {
         int users = -1;
@@ -180,8 +180,6 @@ int main(int argc, char **argv) {
 
 /* process command-line arguments */
 int process_arguments(int argc, char **argv) {
-        int c;
-        int option = 0;
         static struct option longopts[] = {{"critical", required_argument, 0, 'c'},
                                                                            {"warning", required_argument, 0, 'w'},
                                                                            {"version", no_argument, 0, 'V'},
@@ -191,13 +189,15 @@ int process_arguments(int argc, char **argv) {
         if (argc < 2)
                 usage("\n");
 
+        int option_char;
         while (true) {
-                c = getopt_long(argc, argv, "+hVvc:w:", longopts, &option);
+                int option = 0;
+                option_char = getopt_long(argc, argv, "+hVvc:w:", longopts, &option);
 
-                if (c == -1 || c == EOF || c == 1)
+                if (option_char == -1 || option_char == EOF || option_char == 1)
                         break;
 
-                switch (c) {
+                switch (option_char) {
                 case '?': /* print short usage statement if args not parsable */
                         usage5();
                 case 'h': /* help */
@@ -215,13 +215,13 @@ int process_arguments(int argc, char **argv) {
                 }
         }
 
-        c = optind;
+        option_char = optind;
 
-        if (warning_range == NULL && argc > c)
-                warning_range = argv[c++];
+        if (warning_range == NULL && argc > option_char)
+                warning_range = argv[option_char++];
 
-        if (critical_range == NULL && argc > c)
-                critical_range = argv[c++];
+        if (critical_range == NULL && argc > option_char)
+                critical_range = argv[option_char++];
 
         /* this will abort in case of invalid ranges */
         set_thresholds(&thlds, warning_range, critical_range);