Răspuns:
#include <iostream>
using namespace std;
int a[10][10],n,i,j;
int main()
{
cin>>n; //citim n
// Umplem prima linie cu 1
i=1;
for(j=1;j<=n;j++)
a[i][j]=1;
// Umplem prima coloana cu 1
j=1;
for(i=2;i<=n;i++)
a[i][j]=1;
// Umplem ultima coloana cu 1
j=n;
for(i=2;i<=n;i++)
a[i][j]=1;
// Umplem restul matricei
for(i=2;i<=n;i++)
for(j=2;j<=n-1;j++)
a[i][j]=a[i-1][j-1]+a[i-1][j]+a[i-1][j+1];
// Afisare
for(i=1;i<=n;i++)
{
for(j=1;j<=n;j++)
cout<<a[i][j]<<" ";
cout<<endl;
}
}
Explicație:
