What is the logic behind this code to find output?

Question

int x=1,i;
for (i=1;i<4; i++)
{
x+=i;
}
cout<<i;

Answer 1

"For" , "Int" and "Cout" are wrong. These should be "for" and "int" and "cout".

Answer 2

When you declare a variable x, then use this, not X.

Answer 3

Ivan l konw sry it's keypad mistake.
Can you tell me output process ?
I slove but didn't matching the answer

Answer 4

~ swim ~ l solve but l'm not getting right output

Answer 5

~ swim ~ 4 right?
Plz explain correct output?