Answer by Stand with Gaza for Implicit type promotion rules
In this answer I'll address the compiler flags you can use to trackdown bugs related to implicit type promotion since I just ran intothis "feature". In the following buggy code fragment exp is oftype...
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Answer by Jason S for Implicit type promotion rules
I would like to add two clarifications to @Lundin's otherwise excellent answer, regarding example 1, where there are two operands of identical integer type, but are "small types" that require integer...
View ArticleAnswer by Gabriel Staples for Implicit type promotion rules
Integer and floating point rank and promotion rules in C and C++I'd like to take a stab at this to summarize the rules so I can quickly reference them. I've fully studied the question and both of the...
View ArticleAnswer by Lusha Li for Implicit type promotion rules
According to the previous post, I want to give more information about each example.Example 1)int main(){ unsigned char x = 0; unsigned char y = 1; printf("%u\n", x - y); printf("%d\n", x - y);}Since...
View ArticleAnswer by Lundin for Implicit type promotion rules
C was designed to implicitly and silently change the integer types of the operands used in expressions. There exist several cases where the language forces the compiler to either change the operands to...
View ArticleImplicit type promotion rules
This post is meant to be used as a FAQ regarding implicit integer promotion in C, particularly implicit promotion caused by the usual arithmetic conversions and/or the integer promotions.Example 1)Why...
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