1///adds one to the number given 2/// 3/// # Examples 4/// 5/// ``` 6/// let arg =5; 7/// let answer =iter::add_one(arg); 8/// assert_eq!(answer,6); 9/// ``` 10/// 11 12struct K{ 13 obj: u32, 14} 15pub fn add_one(x:i32)-> i32 { 16 x+1 17} 18