For loop outputs

Question

I am pondering about the output for the following two sets of code:

1)

#include <iostream>
using namespace std;

int main()
{
for (int a = 10; a >= 0; a -= 3) {
cout << a << endl;
}

return 0;
}

2)

#include <iostream>
using namespace std;

int main()
{
int x;
for(x=0; x<4; ++x) {

}
cout<< x << endl;
}

The former one, as expected, prints out:
10
7
4
1

The latter one, however, only prints out:
4

Why won't the latter code print the following?
0
1
2
3

Answer 1

Add cout << x << endl; inside the for-loop body, it is currently empty.

Answer 2

Relax bro BTDT 😁

Answer 3

*facepalms*