OJ Board

my code is:


#include <stdio.h>
#include <stdlib.h>

int main()
{
int i, j;
int fieldnum = 1;

int n, m;

while( scanf("%d %d", &n, &m) )
{
if( n==0 && m==0 )
break;


char **field =(char **)malloc( n*sizeof(char *) );
for( i=0; i<n; i++ )
{
field[i] = (char *)malloc( (m+1)*sizeof(char ...