Write using 1234 SML program Write a function str2int to convert a string to an integer (assume that number is always valid). str2int("1234") >  1234, str2int (~"1234") > ~1234.

4. Complete the function show_upper. This function takes one parameter - a string (s). It should return a string made up of all the upper-case characters in s. For example, if s is “aBdDEfgHijK” then show_upper should return “BDEHK”. It should return the upper-case string - not print it. Do not change anything outside show_upper.

in c programing with User-Defined Functions Remove all non-alphabetic characters   Write a program that removes all non-alphabetic characters from the given input. Assume the input string will not exceed 50 characters. Ex: If the input is: -Hello, 1 world$! the output is: Helloworld The program must define and call a function named RemoveNonAlpha that takes two strings as parameters: userString and userStringAlphaOnly. userString is the user specified string from the program input. Function RemoveNonAlpha() then assigns userStringAlphaOnly with the user specified string without any non-alphabetic characters.void RemoveNonAlpha(char userString[], char userStringAlphaOnly[])