Answer 1

you dont need 2D arrays for that
#include <iostream>
using namespace std;
int main()
{
int i,space,rows,k=0,count=0,count1=0;
cout<<"Enter the number of rows: "<<endl;
cin>>rows;
for(i=1;i<=rows;++i)
{
for(space=1;space<=rows-i;++space)
{
cout<<" ";
++count;
}
while(k!=2*i-1)
{
if (count<=rows-1)
{
cout<<i+k<<" ";
++count;
}
else
{
++count1;
cout<<i+k-2*count1<<" ";
}
++k;
}
count1=count=k=0;
cout<<"\n";
}
return 0;
}