* @needle: a substring
*
* Example:
- * #define PRINT_COND_IF_FALSE(cond) \
- * ((cond) || printf("%s is false!", stringify(cond)))
+ * int i;
+ * i = strcount("aaa aaa", "a"); // i = 6;
+ * i = strcount("aaa aaa", "ab"); // i = 0;
+ * i = strcount("aaa aaa", "aa"); // i = 2;
*/
size_t strcount(const char *haystack, const char *needle);