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+ 5

# Hello every one 😊 can you please tell me what is the difference between n++ and n=n++ and n=n+1 ?? In c++

9 Answers

+ 7

thank you all for answering 😊
actually i replaced n=n+1 with n=n++ in a while loop and it printed infinit numbers so i was confused
but i think i am understanding now
thanks for helping 👍😊

+ 5

this is the problem👇
int main()
{
int n=1;
while(n<6)
{
cout<<n<<endl;
n++;
}
}
this program prints 👇
1
2
3
4
5
but when i replace the n++ with n=n++ it printed 👇
1
1
1
1
1
1 forever

+ 3

Don't do things like n = n++;
n++ is the same as n = n + 1, so by using n = n++ you change n twice in the same line which can get you really unpredictable results!

+ 2

the output will be different when using something like cout<<(n=n+1); just replace the expression in parentheses by n=n++ and n++
make sure to set n=0 before.

+ 2

n++ is a post_increment operation whose value can only be updated when u go to the next statement
n=n+1 is a normal arithmetic operation
n+=1 and ++n have same meaning they update themselves on the spot.

+ 2

n++ and n=n+1 are the same.
n++ - it use plus after iteration
++n - it use plus before iteration
so it may be n-- or --n

+ 1

@王文琦 (and also @Moksh Makhija)
n = n++; is not the same as n = n; n++; (or just: n++)
It's more like n++; n = n - 1; (or: n = (n = n + 1) - 1;)
So in the end n doesn't change. (n = n;)

+ 1

Yes, n = n++; doesn't change n (it's like writing n = n;), so the loop will get stuck with n=1 and therefor never end.

0

n++ and n=n+1 are same meaning.
n=n++ can be divided into{ n=n; n++; }