+ 5

Who can explain the C++ modulo operator logic: why, for example, 3 % 4 is equal to 3?

Why is the modulo operator different in C++ from mathematics? Code for checking: #include <iostream> using namespace std; int main() { cout << 25 % 60 << endl; return 0; } Output: 25

11th Nov 2017, 6:01 PM
Ozodbek Kuchkarov
Ozodbek Kuchkarov - avatar
7 Antworten
+ 6
well the modulus operator finds the remainder. ex: 3 ÷ 4 4 does not divide three into a whole number, it leaves remainder 3.
11th Nov 2017, 6:05 PM
Manual
Manual - avatar
+ 6
25 ÷ 60 leaves remainder 25
11th Nov 2017, 6:06 PM
Manual
Manual - avatar
+ 6
Thank you for your answers, but I know what output is going to be generated in certain cases. What I am actually asking about is the LOGIC: why?.. why not 0?...
11th Nov 2017, 6:21 PM
Ozodbek Kuchkarov
Ozodbek Kuchkarov - avatar
+ 6
@ZyuZick if there is no remainder the output is zero. % gives the remainder after dividing.
11th Nov 2017, 6:26 PM
Manual
Manual - avatar
+ 1
the modulo operator(%) is used to get the remainder, but in a case where the number being divided is lesser than the one dividing it, then the number being divided, becomes ur answer. e. g 8%2 = 0 8%3 = 2 (becus the remainder is 2) 3%8 = 3 (explanation above)
11th Nov 2017, 6:18 PM
chibuokem jerry
chibuokem jerry - avatar
+ 1
@Zyuzick because n%m == n (while n<m) [ n,m > 0] n%m == 0 (only when m == n and m is a factor of n)
16th Jan 2018, 2:09 PM
E_E Mopho
E_E Mopho - avatar
0
3%4 means b in 3=4×a + b
17th Nov 2017, 8:54 AM
Steve Meyssonie
Steve Meyssonie - avatar