Am scris codul urmator:
#include <iostream>
#include <math.h>
using namespace std;
int main()
{
int n, a[20][20];
cout<< "Introduceti numarul de linii si coloane." <<endl;
cin >> n;
int i,j,k;
cout<<"Introduceti elementele matricii"<<endl;
for(i = 1; i <=n; i++)
for(j= 1; j<=n; j++)
cin>>a[i][j];
int test=1;
cout<<"Numerele prime din matrice sunt: "<<endl;
for(i = 1; i<=n; i++)
for(j = 1;j<=n;j++){
test = 1;
for(k = sqrt(a[i][j]); k>1; k--){ //bucla care verifica daca numarul e prim
if(a[i][j]%k == 0){
test = 0;
break;
}
}
if(test == 1 && (a[i][j] != 1 && a[i][j] != 0))
cout << a[i][j] <<' ';
}
return 0;
}
E testat si merge.
