Even though %c expects int argument, it is safe to pass a char because of the integer promotion that takes place when a variadic function is called. The correct conversion specifications for the fixed-width character types (int8_t, etc) are defined in the header <inttypes.h> (although ...
Integer promotions preserve the value, including the sign: int main(void) { void f(); // old-style function declaration // since C23, void f(...) has the same behavior wrt promotions char x = 'a'; // integer conversion from int to char f(x); // integer promotion from char ...
floatarguments are converted todoubleas infloating-point promotion. bool,char,short, and unscoped enumerations are converted tointor wider integer types as inintegral promotion. Non-POD class types(until C++11)Scoped enumerations and class types with an eligible non-trivial copy constructor, an ...
The integer conversion rank is also used in the definition ofintegral promotion. Floating-point conversion rank and subrank Floating-point conversion rank Everyfloating-point typehas afloating-point conversion rankdefined as follows: The ranks of the standard floating-point types decrease in order: ...
x-value of unsigned integer type Return value The smallest integral power of two that is not smaller thanx. Exceptions Throws nothing. Notes Prior toP1956R1, the proposed name for this function template wasceil2. Feature-testmacroValueStdFeature ...
CWG 1767C++98condition s of types that are not subject to integral promotion could not be promoteddo not promote condition s of these types CWG 2629C++98conditioncould be a declaration of a floating-point variableprohibited See also External links...
x, y - integer values Return valueSaturated x / y. NotesUnlike the built-in arithmetic operators on integers, the integral promotion does not apply to the x and y arguments. If two arguments of different type are passed, the call fails to compile, i.e. the behavior relative to ...
If the source type isbool, the valuefalseis converted to zero and the valuetrueis converted to the value one of the destination type (note that if the destination type isint, this is an integer promotion, not an integer conversion). ...
b)A value of integer or enumeration type can be converted to any complete enumeration type. Iftarget-typehas a fixed underlying type,expressionis first converted to that type byintegral promotionorintegral conversion, if necessary, and then totarget-type. ...
Converts an unsigned integer into octal representation oooo. Precision specifies the minimum number of digits to appear. The default precision is 1. If both the converted value and the precision are 0 the conversion results in no characters. In the alternative implementation precision is ...