Problem: Write two functions: one called subString char $**,$ char $*)$ which has two pointers $($to pass strings$)$ as arguments and return an integer. The other function is called $,$ int $**,$ int $**)$ and no return value.

The subString function will compare the first string with the second and count how many times the second string is a substring of the first one. For example, if $str1=$ "This is a sentence" and str $2="$en$",$ then the function will return $2.$ If $str1$ is the same and $str2="$s$",$ then the function will return $3.$

The function stat will count how many letters $($not including spaces$)$ and how many words in the first argument and will return the values in other two variables. For simplicity, you can assume the input string has either letters or spaces, has no space at the beginning and the end and there is only one space between two words. In the main function, repeatedly prompt user to input two strings from keyboard, call the two functions and output the results. You cannot use any string functions.