I have written below code for dynamic matrix, and it has got an error compiling

C:\Users\kostas\AppData\Local\Temp\build6344196874205377199.tmp/dynamic_matrix.cpp:83: undefined reference to `operator new[](unsigned int)'

C:\Users\kostas\AppData\Local\Temp\build6344196874205377199.tmp/dynamic_matrix.cpp:86: undefined reference to `operator new[](unsigned int)'

and I don't understand, that is the wrong?

#include <LiquidCrystal.h>

LiquidCrystal lcd(12, 11, 5, 4, 6, 7);

int **matrix;

int m; //col

int n; //row

/////////////////////////DILOSI METAVLITON GIA TO PLIKTROLOGIO

int analogInputPin=0;

int totalOutputDigit=9;

int KeyForEnder='D';

int keyForClear='C';

int rowToPrint=0;

int columnToPrint=0;

int keyboardMode='mod0';

int IncomingString;

///////////////////////////DILOSI METAVLITON GIA TO PLIKTROLOGIO

void printmatrix(int **matrix, int m, int n);

void readmatrix(int **matrix, int m,int n);

void setup()

{

Serial.begin(1200);

lcd.begin(6,2);

}

void loop()

{

rowToPrint=15;

columnToPrint=1;

lcd.print("row");

n=getPressString(IncomingString,analogInputPin,KeyForEnder,keyForClear,rowToPrint,columnToPrint,keyboardMode);

Serial.print("number row:");

Serial.print(n);

lcd.clear();

lcd.print("collumn");

m=getPressString(IncomingString,analogInputPin,KeyForEnder,keyForClear,rowToPrint,columnToPrint,keyboardMode);

Serial.print("number col:");

Serial.print(m);

lcd.clear();

matrix= new int*[n];

for(int i=0; i<n; i++)

{

matrix[i]=new int[m];

}

readmatrix(matrix, m, n);

printmatrix(matrix, m, n);

halt:

goto halt;

}

void readmatrix(int **matrix, int m,int n)

{

int i,j;

int rowToPrint=15;

int columnToPrint=1;

for(i=0; i<=n; i++)

{

for(j=0; j<=m; j++)

{

lcd.print("stoixeio ");

lcd.print(i);

lcd.print(j);

matrix[i][j]=random(200);

Serial.print(matrix[i][j]);

}

}

}

void printmatrix(int **matrix, int m, int n)

{

int i,j;

for(i=0; i<=n; i++)

{

for(j=0; j<=m; j++)

{

Serial.print(matrix[i][j]);

}

Serial.println(" ");

}

}

The function getPressString read the keyboard (4 row, 4 column, 16 button)