please help me with this C language code.thanks

Implement the following specification:/* Removes all vowels from string in and writes the result * to out. Returns 0 if successful and -i if either in or * out is NULL. */int vowelize(char * in, char * out); For example, consider this unit test: # include # include //Write x vowelize here. int mainO {char str [] = "Hello universe!"; char out [32]; int err = x vowelize (str, out); assert (! err); printf ("%.s %s ", str, out); return 0;} Executing it should yield the following on the terminal: Hello universe! Hll nvrs