Passing, filling and printing 2D arrays of varaible size with functions in C language.

In my first example below I declare an array[3][3] and send to fillArray() and printArray() and it works fine. In the second example I ask the user to give an integer wich becomes "size" and use declare array[size][size] and send it to functions but I get error (use of undeclared indetifier "size"). Can some one show me how passing 2D array with a variable size?

First example works:

#include

/* Fills array */ void fillArray(int a[][3]) { printf("Enter 9 integers "); int i, j; for (i=0; i<3; i++) { for (int j=0; j<3; j++) { scanf("%i",&a[i][j]); } } }

/* prints array */ void printArray(int a[][3]) { printf("You array is "); int i, j; for (i=0; i<3; i++) { for (int j=0; j<3; j++) { printf("%i ",a[i][j]); } printf(" "); } }

int main(int argc, char **argv) { int myArray[3][3]; fillArray(myArray); printArray(myArray); return 0; }

Second example doesn't work

#include

/* get size input */ int getSize() { int input; printf("Enter integer N for your N X N array: "); scanf("%i",&input); printf("Size = %i ", input); return input; } /* Fills array */ void fillArray(int a[][size], int size) { printf("Enter your array data as integers "); int i, j; for (i=0; i { for (int j=0; j { scanf("%i",&a[i][j]); } } }

/* prints array */ void printArray(int a[][size], int size) { printf("You array is "); int i, j; for (i=0; i { for (int j=0; j { printf("%i ",a[i][j]); } printf(" "); } }

int main(int argc, char **argv) { /* get size */ int size; size = getSize(); int myArray[size][size]; fillArray(myArray, size); printArray(myArray, size); return 0; }