为什么不同导致相同的操作？ PHP e C＃

Question

I have the following operation in PHP:

24733 * 0x41c64e6d + 0x6073;

...and the result is: 27293242579276

With the same logic, I do the same operation in C#:

24733 * 0x41c64e6d + 0x6073;

But the result is: -1274586804

OMG, why?

Answer 1

by default c# treats number as int when no explicit cast is specified.

so 24733 is treated as int.

int x int + int = int

and Max int is 2147483647 which is way smaller than 27293242579276. This resulted in integer overflow.

To solve the problem, use a type with higher number of bits such as decimal

you can append a letter "m" at the end of the number to tell c# you want it to be a decimal like 24733m * 0x41c64e6d + 0x6073