The first 2 pictures are questions(ignore the first pictures problem) and third one is answer.If you have a better solution please help me and could you explain the answer code line by line pls?

1. Here are five functions, with descriptions of what they are supposed to do. They are incorrectly implemented. Replace the incorrect implementations of these functions with correct ones that use recursion in a useful way; your solution must not use the keywords while, for, or goto. You must not use global variables or variables declared with the keyword static, and you must not modify the function parameter lists. You must not create any auxiliary or helper functions. 7/ Returns the product of two positive integers, m and n, // using only repeated addition int mult (unsigned int m, unsigned int n) return This is incorrect 1. Here are five functions, with descriptions of what they are supposed to do. They are incorrectly implemented. Replace the incorrect implementations of these functions with correct ones that use recursion in a useful way; your solution must not use the keywords while, for, or goto. You must not use global variables or variables declared with the keyword static, and you must not modify the function parameter lists. You must not create any auxiliary or helper functions. 7/ Returns the product of two positive integers, m and n, // using only repeated addition int mult (unsigned int m, unsigned int n) return This is incorrect