Why does my code not work?

Question

/* #include <iostream>
using namespace std;

int main()
{
int mark = 100;

if (mark >= 50) {
cout << "You passed." << endl;
if (mark == 100) {
cout <<"Perfect!" << endl;
}
}
else {
cout << "You failed." << endl;
}

return 0;
}
*/

#include <iostream>
using namespace std;

int main()
{
int x;
cout << "Please enter your exam score." << endl;
cin >> x;

if(x>=50)
{
cout << "Wow, you passed! Great Job!!" << endl;
cout << "Be proud of a score of " << x << "!" << endl;
if(x==100)
{
cout << "In fact, it couldn't be any higher!" << endl;
}
}
else
{
cout << "Oops, it looks like you have failed!" >> endl;
cout << "A score of " << x << " definitely means you can improve!" << endl;
if(x==0)
{
cout << "In fact, did you even try?" << endl;
}
cout << "Better luck next time!" << endl;
}
return 0;
}

Answer 1

Thank you Biraj!