How to change the output.

[AnMTGDude]

Can I change the output based on user input? (I don't have any code)

[Repeater]

Sure can. The output of this program will change depending on user input.

# include <iostream>
# include <string>
using namespace std;
int main()

{
  string word;

  cout << "Enter word: ";
  cin >> word;
  cout << "\n  You entered: " << word;

}

[AnMTGDude]

No what I mean is, say a user was to input Hola I would have a if else statement that would be something, I guess, like this:

# include <iostream>
# include <string>
int main(){
if (User enters Hola){
cout << "Hello";
}
}

But thanks anyways! I'd really appreciate anyone answering this! Edit: What I'm aiming for here is kind of a translator. You know?

[Ganado]

Going off Repeater's example, you could just do:

if (word == "Hola")
{
    cout << "Hello";
}

To match your code a bit more literally,

// Example program
#include <iostream>
#include <string>

bool user_enters(const std::string& str)
{
    std::string input;
    return (std::cin >> input && input == str);
}

int main()
{
    using std::cout;
    
    if (user_enters("Hola")) {
        cout << "Hello";
    }
}

A translator is really complicated because there is only a 1:1 mapping in the simplest of cases.

[AnMTGDude]

Okay yeah i see but i'm not going for like spanish. so for example i made a code e.g. A = p, b= i and so on. so if i would do your example how could i make the computer understand the difference from like a and b for example:

#include <iostream>
#include <string>

int main() {
int letter;
if(letter== a ){
cout << "p";
}
}

And the user were to enter "ad" how could i have the computer distinguish a from d?

Thanks! I really appreciate any help you guys give! Sorry I'm pretty new to coding, and I'm just curious about some of this stuff.

[jonnin]

its hard to answer this without you having a goal, but your goal seems to be 'random learning' which is fine (I do the same with some new material) but hard to guide you.

let me take a little crack:
char c; //this is a one byte integer suitable for storing english letters. int will work but its not the normal way.
string s; //this is a block of characters, can be a word or a sentence or even a full book!
c = 'a'; // 'a' is a letter. "a" is a string, though. note the different quote types.
s = "blah";
s[0] = 'z'; //s now contains zlah. [0] is the first characters, [1] is the second... so on.

you can use lookup tables for single letter swapping in english (ascii, single byte letters) easily. You also have tools with strings that can replace a letter with a string or string to string or whatever you need. This is where you need a goal before we can tell you how to do something, you need a bit more detail on what you want to do. Or you can review c++ string functions to see what you CAN do built in and beyond that you can craft your own tools to do other stuff if needed.

[AnMTGDude]

Okay here we go. (Thank you so much btw jonnin) So I created a "language" that I switched all the letters in. Here it is:
A = I
B = L
C = S
D = W
E = O
F = V
G = Y
H = D
I = U
J = J
K = G
L = K
M = M
N = ALX
O = E
P = R
Q = Q
R = F
S = B
T = H
U = A
V = C
W = Z
X = Mo
Y = P
Z = N

And what I want is a program that would ask the user to type in a phrase or word and it would translate it. For example: The user types in "Hello" and the computer returns: "Dokke"

I hope this is now clear for everybody!

[againtry]

@OP Oh, we have an encryption program, perhaps even a dictionary!! Good way to start.

Given the strings (eg "ALX") as part of the encoding the immediate question to be asked is are you familiar with <map>'s in C++ because setting one up and using it is ideal here. <map>'s are often called dictionary-style storage.

There are plenty of other ways from C-style arrays which the array police will leap at your throat about, or <vector>'s

https://www.cplusplus.com/reference/map/map/find/

[AnMTGDude]

Okay, thanks I'll try that!