Comparing two vectors might be giving me an error - c++

Question

So the idea behind this is that a user inputs a message, and the message gets translated to Morse code. It is a homework assignment I've been working on for over 8 hours today. It's also my first time seriously working with classes.
When run, I get only one error on line 64. The error I got makes no sense (and it's huuuuge so I don't want to include it unless asked). I suspect the issue is that the originalMessage vector and alphaCode vector are different vector types (string & char respectively).
#include <iostream>
#include <vector>
#include <string>
using namespace std;
class Code
{
private:
vector<char> alphaCode;
vector<string> morseCode;
vector<string> originalMessage;
vector<string> finalMessage;
public:
Code();
void encoder(vector<string> input);
void display();
};
Code::Code():alphaCode(), morseCode(28)
{
//Building alphaCode
for (char c='A'; c<='Z'; c++) alphaCode.push_back(c);
alphaCode.push_back(' ');
alphaCode.push_back('.');
//Building morseCode
morseCode[0] =".-";
morseCode[1] ="-...";
morseCode[2] ="-.-.";
morseCode[3] ="-..";
morseCode[4] =".";
morseCode[5] ="..-.";
morseCode[6] ="--.";
morseCode[7] ="....";
morseCode[8] ="..";
morseCode[9] =".---";
morseCode[10] ="-.-";
morseCode[11] =".-..";
morseCode[12] ="--";
morseCode[13] ="-.";
morseCode[14] ="---";
morseCode[15] =".--.";
morseCode[16] ="--.--";
morseCode[17] =".-.";
morseCode[18] ="...";
morseCode[19] ="-";
morseCode[20] ="..-";
morseCode[21] ="...-";
morseCode[22] =".--";
morseCode[23] ="-..-";
morseCode[24] ="-.--";
morseCode[25] ="--..";
morseCode[26] =".......";
morseCode[27] ="x";
}
void Code::encoder(vector<string> input)
{
originalMessage = input;
for (int i = 0; i < originalMessage.size(); i++)
{
for (int j = 0; j < alphaCode.size(); j++)
{
if (originalMessage[i] == alphaCode[j])
{
finalMessage.push_back(morseCode[j]);
finalMessage.push_back(" ");
}
}
}
}
void Code::display()
{
for (int x; x < finalMessage.size(); x++) cout << finalMessage[x];
}
//------------------------------------------------------------------------------
int main()
{
vector<string> message;
string temp;
cout << "Input:" << endl;
cin >> temp;
message.push_back(temp);
Code c1;
c1.encoder(message);
c1.display();
}

Answer 1

You have a couple of problem in your source code.
The first problem is message variable:
vector<string> message;
Could be changed to:
string message;
And change other parts of your code, based on this change.
The second problem backs to
for (int x; x < finalMessage.size(); x++) cout << finalMessage[x];
variable x is not initited, initite it or write a better loop like this:
for (const auto& x : finalMessage) cout << x;

Answer 2

Please read the error message :
prog.cpp:64:36: error: no match for 'operator==' (operand types are 'std::basic_string' and 'char')
if (originalMessage[i] == alphaCode[j])
if (originalMessage[i] == alphaCode[j])
originalMessage is a vector<string> while alphaCode is vector<char>
There is no way you can compare char with a string
You may want to change your function this way:
void Code::encoder(vector<string> input)
{
originalMessage = input;
for (int i = 0; i < originalMessage.size(); i++)
{
string i_string = originalMessage[i]; // get the string here
for (int j = 0; j < alphaCode.size(); j++)
{
if (i_string.at(i) == alphaCode[j]) // get the char in string
{
finalMessage.push_back(morseCode[j]);
finalMessage.push_back(" ");
}
}
}
}
EDIT
Basically, we want to extract char information from the string
for (int i = 0; i < originalMessage.size(); i++) {
string i_string = originalMessage[i];
for (int j =0; i < i_string.size(); j++) {
char at_j = i_string.at(j);
// find this at_j in alphaCode
// enncode
}
}