Friends i want know how the output is come 6

Question

public class Program
{
public static void main(String[] args) {
int m,n=0;

for(m=1; m<=4; m++){
n+=m;
n--;

}
System.out.println(n);
}
}

/* Output

6

*/

Please understand me briefly...

Answer 1

𝐊𝐢𝐢𝐛𝐨 𝐆𝐡𝐚𝐲𝐚𝐥
Not sure I understand

https://code.sololearn.com/cleVb0ajs7Uz/?ref=app

Answer 2

Normally 1+2+3+4 but in each of 4 loops n--
So 10 -4=6

Answer 3

(n+m)-1=n (equal to).

0+1 -1 =0
0+2 -1 =1
1+3 -1 =3
3+4 -1 =6

@Kiibo since n-- is a separate statement. (post or pre, no difference, not effect in result.)
@Oma Falk teacher is fast, applied farmula some of sequestial numbers - iterations just.