Write a function named replaceSubstring. The function should accept three C-string or string object arguments. Let’s call them string1, string2, and string3. It should search string1 for all occurrences of string2. When it finds an occurrence of string2, it should replace it with string3. For example, suppose the three arguments have the following values:    string1: "the dog jumped over the fence"   string2: "the"   string3: "that"With these three arguments, the function would return a string object with the value “that dog jumped over that fence”. Demonstrate the function in a complete program.

Consider the following line of code: X = new int*[n]; What should the type of x be? O int O int* O int** O int& O None of the above

5. use c code to Write a stringSearch function that gets two strings one called needle and the other called haystack. It then searches in the Haystack for the needle. If it finds it, it returns the index of where the needle starts in the haystack. If the needle cannot be found, it should return -1 Prototype: int stringSearch(char needle[], char haystack) Example1: Haystack: “This is just an example” Needle: “just” Result: 8 Example2: Haystack: “This is just an example” Needle: “This” Result: 0 Example3: Haystack: “This is just an example” Needle: “this” Result: -1 Hint: all the answer need to include an output and use c code to answer

in python