Well that truly cost me some grey hairs

059/main.cpp

@@ -38,7 +38,6 @@ int main(){
         encrypted.push_back(current);
         inFile.get();
     }
-    encrypted.pop_back();
 
     inFile.close();
 
@@ -48,17 +47,14 @@ int main(){
                 const unsigned char key[] = {i,j,k};
 
                 vector<unsigned char> decoded;
-                for(size_t pos = 0; pos < encrypted.size(); ++pos){
+                for(size_t pos = 0; pos < encrypted.size(); pos++){
                     decoded.push_back(encrypted[pos] ^ key[pos % 3]);
                 }
 
                 bool valid = true;
                 for(auto d : decoded){
-                    valid  = (d >= '0' && d <= '9');
+                    valid  = (d >= ' ' && d <= ';');
-                    valid |= (d >= 'a' && d <= 'z');
+                    valid |= (d >= 'A' && d <= 'z');
-                    valid |= (d >= 'A' && d <= 'Z');
-                    valid |= (d == ' ' || d == ',' || d == '.' || d == '?' || d == '!');
-                    valid |= (d == ';' || d == ':' || d == '-' || d == '\'' || d == '(' || d == ')');
 
                     if(!valid){
                         break;
@@ -69,6 +65,7 @@ int main(){
                     continue;
                 }
                 
+                cout << key << endl;
                 unsigned int asciiSum = 0;
                 for(auto d : decoded){
                     asciiSum += d;