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1 #include <iostream>
2 #include <string>
3
4 using namespace std;
5
6 int main();
7
8 string to_lower(string word, int x){
9 if ( x <= word.length()){
10 word[x] = tolower(word[x]);
11 to_lower(word, x+1);
12 }
13 else;
14 return word;
15 }
16
17 string check_alpha(string word, int k){
18 if (k < word.length()){
19 if (isalpha(word[k])){
20 cout <<"It adds an x here"<< k << endl;
21 k++;
22 check_alpha(word, k);
23 }
24 else;
25 cout<<"It should erase a letter"<<k<<endl;
26 word.erase(k,1);
27 check_alpha(word, k);
28 }
29 else;
30 return word;
31 }
32
33 string check_palindrome(string word, string reversed, int k, int &check){
34 if (k <= word.length()/2.0){
35 if (word[k] != reversed[k]){
36 cout<< "You did not enter a palindrome"<<endl;
37 check = 0;
38 }
39 }
40 }
41
42 void determine_palindrome(){
43 int k = 0;
44 string word;
45 string reversed;
46 int check = 1;
47 cin.ignore();
48 cout <<"Enter your string: ";
49 getline(cin, word);
50
51 //makes word lowercase
52 word = to_lower(word, 0);
53
54 //removes non-letter characters
55 word = check_alpha(word, k);
56 cout << word << endl << k << endl;
57
58 //reverses a string
59 reversed = string(word.rbegin(), word.rend());
60
61 //determines if word is a palindrome
62 check_palindrome(word, reversed, 0, check);
63 if (check == 1)
64 cout << "You entered a palindrome!" << endl;
65 main();
66
67 }
68
69
70 void reverse_string(){
71 string word;
72
73 cin.ignore();
74 cout <<"Enter your string: ";
75 getline(cin, word);
76 //reverse word
77 word = string(word.rbegin(), word.rend());
78 cout<< "Reversed string: " << word << endl;
79 main();
80 }
81
82
83
84 int main(){
85
86 int choice;
87
88 cout << "Do you want to reverse a string, check if it is a palindrome, orquit?/n(Enter 1 for reverse, 2 for a palindrome, and anything else to quit)";
89 cin >> choice;
90
91 if (choice == 1)
92 reverse_string();
93 else
94 return 0;
95 }
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