make pedantic clang happier by not specifying unused argc/argv

approximate-pi.c

@@ -18,7 +18,7 @@ double approximate_pi(unsigned int steps) {
   return approximate_pi;
 }
 
-int main(int argc, char *argv[]) {
+int main(void) {
   // printf("sizeof(int) = %d\n", sizeof(int));
 
   double mypi = approximate_pi(100000000);

structs.c

@@ -5,7 +5,7 @@ struct test {
 };
 typedef struct test test_t;
 
-int main(int argc, char *argv[]) {
+int main(void) {
   test_t a = { 23 };
   test_t b = { 42 };
 

wo-lernen.c

@@ -17,7 +17,7 @@ unsigned long mix(unsigned long a, unsigned long b, unsigned long c) {
   return c;
 }
 
-int main(int argc, char* argv[]) {
+int main(void) {
   unsigned long seed = mix(clock(), time(NULL), getpid());
   srand(seed);