View difference between Paste ID: aai4rgWx and yTsx1uzr

 #include <iostream>
 #include <string>
 
 using namespace std;
 
 string getPyramid(const string&);
 
 int main()
 {
 	string letters {""};
 	cout << "Give me some letters: ";
 	cin >> letters;
 	cout << getPyramid(letters);
 }
 
 string getPyramid(const string &letters)
 {
 	string pyramid {""};
 
 	for (int i {0}; i < (int)letters.length(); i++)
 	{
 		for (int j {0}; j < (int)letters.length() - 1 - i; j++) pyramid += ' ';	//spaces
 		for (int j {0}; j <= i; j++) pyramid += letters.at(j);	//begin to center
 		for (int j {i-1}; j >= 0; j--) pyramid += letters.at(j); //center (exclusive) to begin
 		pyramid += '\n';	//endline
 	}
 
 	return pyramid;
 }