#include <iostream>
#include <vector>
using namespace std;
void displayDiagonal(int arr[3][3]) {
for (int i = 0; i < 3; i++) {
for (int j = 0; j < 3; j++) {
if (i == j)
cout << arr[i][j] << ' ';
}
}
cout << endl;
}
int main() {
int mat[3][3] = {
{1,2,3},
{2,2,3},
{8,5,6}
};
displayDiagonal(mat);
return 0;
}
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