```#include <stdio.h>
void w(char ch[][5]){
ch[1][1]=' ';
}
int main()
{
char cs[6][5] = {
{'#','#','#','#','#'},
{'#','0','#',' ','#'},
{'#',' ','#',' ','#'},
{'#',' ','#',' ','#'},
{'#','#',' ',' ','#'},
{'#','#','#','#','#'}};
printf("cs[0][0] = %c\n", cs[0][0]);
w(cs);
printf("cs[1][1] = %c\n", cs[1][1]);
for(int i=0;i<6;i++){
for(int j=0;j<5;j++){
printf("%s",cs[i][j]);}
printf("\n");}
}
```