array errors

Basically this program just reads in a seating chart... Problem is I keep getting the error below... Im not sure what it means... My code seems correct?.. any help?

getting error

Code:

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main.cxx:8: error: variable-size type declared outside of any function
main.cxx:8: error: variable-size type declared outside of any function
main.cxx:10: error: variable-size type declared outside of any function
main.cxx:11: error: variable-size type declared outside of any function
main.cxx:33: error: variable-size type declared outside of any function
main.cxx:40: error: variable-size type declared outside of any function

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Main.cxx

Code:

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#include <iostream>
#include <fstream>

using namespace std;

int SIZE = 50;
int num_mat,occupied, row, col;
char m1[SIZE][SIZE];

void init_array(char array[][SIZE]);
void display_array(char array[][SIZE]);

int main() {
init_array(m1);

cin >> num_mat;
cin >> occupied;

while( !cin.eof() ) {
  cin >> row >> col;
  if(col=='\n') {
      occupied = row;
      display_array(m1);
      init_array(m1);
  } else
        m1[row][col] = 'X';

}

return 0;
}

void init_array(char array[][SIZE]) {
  for(int i=0;i<SIZE;i++) {
      for(int j=0;j<SIZE;j++)
        array[i][j] = 'E';
  }
}

void display_array(char array[][SIZE]) {
    for(int i=0;i<SIZE;i++) {
      for(int j=0;j<SIZE;j++)
        cout << array[i][j] << endl;
  }
}

---

Thanks for any assistance guys.

Hello,

Array declarations use constant expressions for subscripts. For example:

Code:

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D1[constant-expression]

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If the constant-expression is present, it must have integral type, and value greater than 0.

A constant expression is an expression that involves only constants. Such expressions may be evaluated during compilation rather than run-time, and accordingly may be used in any place that a constant can occur. For example:

Code:

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#define SIZE 50
char line[SIZE+1];

---

An array's subscript must always be a constant expression. In your example, size is defined during run-time rather than a constant.


- Stack Overflow

You need to make your array dimensions constant. Right now it is

Code:

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int SIZE = 50;

---

So just change that to:

Code:

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const int SIZE = 50;

---

and it should compile fine.

const int SIZE did it..

thank you gentlemen :-P.