Simple word translator, return error: invalid array assignment

Question

I know this is not a good question. But I am clueless with this error : invalid array assignment (at function convert). For extra information, I involved a lot of copying/pasting programs I haven't exactly understand from internet in the convert function (the strncpy ones) so.. yeah.

This is the program I've done (the menu/mn button currently not used):

#include <LiquidCrystal.h>
#define WORD 11
#define LETTER 15
LiquidCrystal lcd(7,6,5,4,3,2);
int i=0;
char input[] = "a";
char output[15];
const int dw = 8;
const int ri = 9;
const int le = 10;
const int up = 11;
const int ok = 12;
const int mn = 13;
int checker = 0;
int bounceCk = 0;

int bdw=0, bri=0, ble=0, beu=0, beo=0, bem=0;

void setup()
{
  pinMode(dw, INPUT);
  pinMode(ri, INPUT);
  pinMode(le, INPUT);
  pinMode(up, INPUT);
  pinMode(ok, INPUT);
  pinMode(mn, INPUT);  
}
void intext()
{
  int lim=16;
  lcd.setCursor(0,1);
  lcd.print(input);
  for(i=0; i<lim ; )
  {
    lcd.setCursor(0,1);
    lcd.print(input);  
    if(digitalRead(dw)==HIGH)
    {
      checker=digitalRead(dw);
      delay(100);
      bounceCk=digitalRead(dw);
      if(checker==bounceCk)
      {
        if(input[i]>'z')
          input[i]='a';
        input[i]=input[i]+1;
      }      
    }
    if(digitalRead(up)==HIGH)
    {
      checker=digitalRead(up);
      delay(100);
      bounceCk=digitalRead(up);
      if(checker==bounceCk)
      {
        if(input[i]<'a')
          input[i]='z';
        input[i]=input[i]-1;    
      }
    }
    if(digitalRead(ri)==HIGH && i<16)
    {  
      checker=digitalRead(ri);
      delay(100);
      bounceCk=digitalRead(ri);
      if(checker==bounceCk)
      { 
        i=i+1;
      }
    }
    if(digitalRead(le)==HIGH && i>0)
    {
      checker=digitalRead(le);
      delay(100);
      bounceCk=digitalRead(le);
      if(checker==bounceCk)
      {      
        i=i-1;
      }
    }
    if(digitalRead(ok)==HIGH)
    {
      checker=digitalRead(ok);
      delay(100);
      bounceCk=digitalRead(ok);
      if(checker==bounceCk)
      {      
        lim=i;
      }
    }
  }
}
void convert()
{
   char sumber[WORD][LETTER] = {{0}};  /* declare a progmem unsigned static array of kata x huruf */
   char dasar[WORD][LETTER] = {{0}};  /* declare a progmem unsigned static array of kata x huruf */

  /* copy various strings to statically declared storage SUMBER */
  strncpy (sumber[0],"memakan", strlen("memakan")+1);
  strncpy (sumber[1],"makanan", strlen("makanan")+1);
  strncpy (sumber[2],"menyuci", strlen("menyuci")+1);
  strncpy (sumber[3],"perubahan", strlen("perubahan")+1);
  strncpy (sumber[4],"penulisan", strlen("penulisan")+1);
  strncpy (sumber[5],"tercampurkan", strlen("tercampurkan")+1);
  strncpy (sumber[6],"pengelompokan", strlen("pengelompokan")+1);
  strncpy (sumber[7],"pengembangan", strlen("pengembangan")+1);
  strncpy (sumber[8],"kehebatan", strlen("kehebatan")+1);
  strncpy (sumber[9],"memotret", strlen("memotret")+1);
  strncpy (sumber[10],"melakukan", strlen("melakukan")+1);

  /* copy various strings to statically declared storage DASAR*/
  strncpy (dasar[0],"makan", strlen("makan")+1);
  strncpy (dasar[1],"makan", strlen("makan")+1);
  strncpy (dasar[2],"cuci", strlen("cuci")+1);
  strncpy (dasar[3],"ubah", strlen("ubah")+1);
  strncpy (dasar[4],"tulis", strlen("tulis")+1);
  strncpy (dasar[5],"campur", strlen("campur")+1);
  strncpy (dasar[6],"kelompok", strlen("kelompok")+1);
  strncpy (dasar[7],"kembang", strlen("kembang")+1);
  strncpy (dasar[8],"hebat", strlen("hebat")+1);
  strncpy (dasar[9],"potret", strlen("potret")+1);
  strncpy (dasar[10],"laku", strlen("laku")+1);

    /* mencari input pada sumber */
  int k=0, search=0, sel=9;

  while(search==0)
  {
    sel=strcmp(input, sumber[k]);
    if(sel==0)
    {
      output[]=dasar[k]; //!!!!THE ERROR IS HERE!!! happen to either this or output=dasar[k]
      lcd.clear();
      lcd.setCursor(0,0);
      lcd.print("Base Word:");
      lcd.setCursor(0,1);
      lcd.print(output);      
      search=1;
    }
    else
    {
      k=k+1;
      if(k>=11)
      {
        lcd.clear();
        lcd.setCursor(0,0);
        lcd.print("Error:NF");
        lcd.setCursor(0,1);
        lcd.print("word n found");
        search=1;
      }
    }
  }
    /* 
    //print the values 
    while (*sumber[i])
        printf ("  %s\n", sumber[i++]);
    */

}  
void loop()
{
  lcd.begin(16,2);
  lcd.setCursor(0,0);
  lcd.print("Type your word:");
  intext();
  convert();
  delay(15000);
}

I found more errors before, I've fixed those, but can't fix this one. I think this problem is caused by the wrong instruction or wrong format. But can't found solution...yet.

The program is converting words to its basic word in Bahasa, you can compare it to English like this. You type "eaten" and it will return "eat". You type "understood" it will return "understand". When you type "stunk" it will return "stink". Or something like that.

Example in bahasa :

"memakan" (eating) -> "makan" (eat)

"makanan" (food) -> "makan" (eat)

"pengembangan" (development) -> "kembang" (becoming bigger/better)

etc

I hope someone will give me a clear hint or two (I'm not too bright, but I still need to learn how not just copying things around), Thank you very much!

Answer 1

It looks like you're trying to copy the contents of a particular sub-array in dasar across to the output array. However, this isn't valid in C/C++:

output[]=dasar[k];

To copy data from one array to another, you either need to copy each element one-by-one (e.g. in a loop), or use a block memory operation like memcpy.

Here's how I would do it:

memcpy(output, dasar[k], sizeof(output));

This should work because arrays are basically just pointers in C/C++. It uses the start of output as the destination of the copy, and uses the start of dasar[k] as the source. The number of bytes it copies is taken from the total size of the output array.

Answer 2

Just replace the line in error with:

strcpy(output, dasar[k]);