Actual working tests on strspn and strcspn

tests/string/strspn.c

@@ -2,9 +2,12 @@
 #include <stdio.h>
 
 int main(int argc, char* argv[]) {
-	printf("%lu\n", strspn("hello", "hello")); // should be 5
-	printf("%lu\n", strspn("world", "wendy")); // should be 1
-	printf("%lu\n", strspn("banana", "apple")); // should be 0
+	char *hello = "hello";
+	char *world = "world";
+	char *banana = "banana";
+	printf("%lu\n", strspn(hello, "hello")); // should be 5
+	printf("%lu\n", strspn(world, "wendy")); // should be 1
+	printf("%lu\n", strspn(banana, "apple")); // should be 0
 
     return 0;
 }