I have to display some sentences on a screen. However, the language can change if the user want to, so I do not want but I can do that :

if(language==1)
{
printf("Hello sir");
}
else if(language==2)
{
printf("Hola senor");
}

printf("%s",language == 1 ? "Hello sir" : "Hola senor");

I do not want that because I have a lot of iterations. Can I use map or enum and change it during code is running, I was thinking about a things like that :

#define MESSAGE_HELLO "Hello sir" OR "Hola senor"
printf("%s",MESSAGE_HELLO);

Do you have an idea ? Can you help me please ?

CodePudding user response：

You probably can create two maps for the words you want to translate - one map for one language - and then create a pointer to one of the maps. Then use pointer and [] to take words you need. Also, the pointer can be changed so that it points to another map at any moment.

CodePudding user response：

In the professional world, I have often used tables (arrays) of phrases. Each slot in the array represents the phrase in another language.

static const char str_hello[] =
{
  /* English */ "hello",
  /* Spanish */ "hola",
  /* German  */ "guten tag",
  //...
};

This has worked well in embedded systems.

CodePudding user response：

You can use some internationalization library that might help you. But here I will focus on how one can solve such a problem. Naturally, you need to have a set of languages, a set of message keys and a relationship between message keys and the languages, which would hold the actual message. Let's see some solutions:

Language file

You can store english.txt, etc. which would look like this:

hello="Hello"
world="World"

and some other language, hungarian.txt for example:

hello="Heló"
world="Világ"

etc.

Now, you can create an array of Map<String, Map<String, String>>, loop the languages, for each language process the corresponding file and fill the map accordingly.

Database

You can store a languages table, a message_keys table and a messages table. The messages table would have a foreign key pointing to languages and another one to message_keys and the actual message would be stored there as well. You could have an API that you could use in order to request items or groups of messages in a certain language.

There are many possible solutions.