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C++ Question
Hi, Codeforces Community!
I recently looked to a programm written by a participant in the contest, and I noticed this function, which is finding the greatest common devisor of two numbers.
long long int gcd(long long int a, long long int b) { return (b == 0LL ? a : gcd(b, a % b)); }
But I don't understand how this part (b == 0LL ? a : gcd(b, a % b)) of the function is working. Can anyone explain please?
| Rev. | Lang. | By | When | Δ | Comment | |
|---|---|---|---|---|---|---|
| en2 |
|
Vahagn_Grigoryan | 2021-04-18 10:39:55 | 20 | Tiny change: ' int gcd(lli a, lli b) { retu' -> ' int gcd(long long int a, long long int b) { retu' | |
| en1 |
|
Vahagn_Grigoryan | 2021-04-18 10:38:52 | 409 | Initial revision (published) |
