Why it is showing the error

#1

#include
using namespace std;
int main()
{
int n;
cin>>n;
for(int i=1;i<=n;i++)
{
for(int space=1;space<=n-i;space++)
{
cout<<" ";
}
int val=i;
for(int cnt=1;cnt<=i;cnt++)
{
cout<<val;
val=val+1;
}
val=val-2;
for(int cnt=1;cnt<=i-1;cnt++)
{
cout<< val;
val=val-1;

	}
	cout<<endl;
}
return 0;

}

#2

@shdanish1508 you have to give space between is number by tab separation("\t");

#3

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