math - (7 - 12) mod 24 equals 19 but in C++ it equals 4294967291 -


this question has answer here:

if google (7 - 12) mod 24 answer 19.

when c++ 4294967291

uint32_t hour = (7 - 12) % 24; // hour = 4294967291

if try int32_t

int32_t hour = (7 - 12) % 24; // hour = -5

(7 - 12) % 24 signed expression, , assigning unsigned int makes see different result

in c % remainder operation (7 - 12) % 24 = -5

unsigned(-5) = 4294967291 // since 4294967291 + 5 = 4294967296

while google , python uses mathematics modulus operation, result 19. , 19 + 5 = 24

c,python - different behaviour of modulo (%) operation


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