Citirea si afisarea unei matrici

#include<iostream>
using namespace std;
int main()
{int n,i,j,a[100][100];
cout<<"n=";cin>>n;
for(i=0;i<n;i++)
    for(j=0;j<n;j++)
    {cout<<"a["<<i<<"]["<<j<<"]=";cin>>a[i][j];}
   
for(i=0;i<n;i++)
    {cout<<endl;
for(j=0;j<n;j++)
    cout<<a[i][j]<<" ";}
   
}