Implement the following specification:I would thank you for helping me with this code I could not figure it out. write in C language and run in VM.thanks

1 Returns whether str contains an inst ance of subs tr 2 Returns 0 if either str or substr i s NULL or substr is 3 not in str returns 1 if substr 2 S in str. 5 int has Substring char str char substr For example, hasSubstring "Hello universe "verse") should return. 1. Use the following main function to test your code 1 include assert. h 2 int main 3 assert has Substring Hello universe lo 4 assert Chas Substring ("Hello universe verse 5 assert has Substring Hello universe assert has Substring C 7 assert has Substring ("Hello universe verses 8 assert has Substring Hello universe loun 9 assert has Substring "Hello universe "erse 10 return 0 t 11