edaBit-coding-challenges/Replace-Letters-With-Position-In-Alphabet/code.cpp

using namespace std;
/*  Create a function that takes a string and replaces each 
 *  letter with its appropriate position in the alphabet. 
 *  "a" is 1, "b" is 2, "c" is 3, etc, etc.
 */
string alphabetIndex(string str) {
	string result;
	for(int i = 0;i<str.size();i++){
		if(!isalpha(str[i])){continue;}
		//  lowercase all values in string
		str[i] = tolower(str[i]);
		//  calculate position of each letter
		int temp = str[i]-96;
		//  add position of each letter to result, with a space
		result += to_string(temp)+ ' ';
	}
	//  remove the last space at the end of result
	result.pop_back();
	return result;
}