Aiuto matrice c++

#include<iostream>
#include<time.h>
#include<stdlib.h>
using namespace std;

int main () {
srand(time(NULL));
 char t[15][15];
 int i,j;
 char x='-';
 char a='A';
 char b='1';
 for(j=0;j<10;j++) {
  for (i=0;i<11;i++) {
   if(j==0&&i!=10) {
    t[i][j]=a; cout<<"  "<<t[i][j]; a++;
   }
   else if(j!=0&&i==0) {
     t[i][j]=b; cout<<t[i][j]; b++;}
   else if(j!=0){t[i][j]=x; cout<<" "<<t[i][j]<<" ";}
  }
cout<<endl; }
 
 cout<<endl<<endl;
 

int z=0,w=0;
 int orie=rand()%2;
 bool occ=false;

if (orie==0) {
 while(z==0) z=rand()%8;
 while(w==0) w=rand()%10;
 for(i=z;i<z+4;i++) {t[i][w]='o';}  }
else if(orie==1) {
 while(z==0) z=rand()%11;
 while(w==0) w=rand()%7;
 for(j=w;j<w+4;j++) {t[z][j]='o';}  }

for (int k=0;k<2;k++) {
 do {
 orie=rand()%2;
 if(orie==0) {
   while(z==0) z=rand()%9;
   while(w==0) w=rand()%10;
   if(t[z][w]=='o' or t[z+1][w]=='o' or t[z+2][w]=='o') occ=true;
   else {t[z][w]='o';t[z+1][w]='o'; t[z+2][w]='o';}  }
 else if(orie==1) {
  while(z==0) z=rand()%11;
  while(w==0) w=rand()%8;
  if(t[z][w]=='o' or t[z][w+1]=='o' or t[z][w+2]=='o') occ=true;
  else{t[z][w];t[z][w+1]='o'; t[z][w+2]='o';}    }
 }
 while(occ==true);
 }


for(j=0;j<10;j++) {
  for(i=0;i<11;i++){
    if(j==0) {
     cout<<"  "<<t[i][j]; }
    else if(j!=0&&i!=0) {cout<<" "<<t[i][j]<<" ";}
    else cout<<t[i][j];}
   cout<<endl;}
}