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c - What is this thing: "\x30\xff\xff\x31\xff\xff\xff\xff" called?

Stack Overflow
These are called hexadecimal escape sequences. It's basically just an optional way of writing this: char next_ptr[8] = {0x30, 0xff, 0xff,...
37 months ago

c - MPLABX XC8 Compiler - implicit signed to unsigned conversion?

Stack Overflow
Integer types smaller than int (e.g. unsigned char ) are promoted to int when an operation is performed on them.
21 months ago

Compiler Design - How does does automatic type casting occur when multiple cast levels away

Stack Overflow
The conversion happens directly, i.e., byte -> long . C implicit conversions. If the types have the same signedness (both signed or both...
48 months ago

c - What characters are legal to use in string literals?

Stack Overflow
The portable characters that can apoear in the program source are exactly these: the 26 uppercase letters of the Latin alphabet
117 months ago

C++ Error - warning: comparison between signed and unsigned integer expressions [-Wsign-compare]

Stack Overflow
would like to know how to fix them all, please! The diagnostic says that you are comparing numbers of different signedness.
50 months ago

How is the type of auto determined when multiplying a value by a static_cast [duplicate]

Stack Overflow
I expect these results for a, c, and d, but I'm baffled by b. 64 clearly fits in a 8-bit unsigned char. Can anyone explain, please?
80 months ago

java - Why is Arrays.equals(char[], char[]) 8 times faster than all the other versions?

Stack Overflow
@Marco13 guess was right. HotSpot JVM has an intrinsic (i.e. special hand-coded implementation) for Arrays.equals(char[], char[]) , but not...
95 months ago

assembly - Ollydbg : sign extending with Movsx

Stack Overflow
The byte at the memory location has the value 65h. This is a positive number and thus the extension will fill the 3 highest bytes of ECX...
108 months ago

En c++ aparece la advertencia "warning: comparison between signed and unsigned integer expressions [-Wsign-compare]"

Stack Overflow en español
Formato de números con y sin signo en binario. Los ordenadores almacenan números en binario; como no puedes guardar el símbolo de negativo...
99 months ago

c++ - Is resolving char between signed and unsigned int unspecified?

Stack Overflow
Your diagram is correct for the case of integer promotion. However, in the code function(c) , integer promotion does not happen.
101 months ago