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 C Data Type Q&A » integer » arithmetic

1. Arithmetic operations on unsigned and signed integers    stackoverflow.com

See this code snippet

``````int main()
{
unsigned int a = 1000;
int b = -1;
if (a>b) printf("A is BIG! %d\n", a-b);
else printf("a is SMALL! %d\n", a-b);
return 0;
} ...``````

2. Data type promotions during arithmetic operations    stackoverflow.com

`````` main()  {
if ( -1 < (unsigned char) 1 )
printf("less than");
else
printf("NOT less than");
...``````

3. C usual arithmetic conversions    stackoverflow.com

I was reading in the C99 standard about the usual arithmetic conversions.

If both operands have the same type, then no further conversion is needed. Otherwise, ...

4. unsigned int arithmetic - beginner C    stackoverflow.com

At the risk of getting yelled at for posting a stupid question: say I have the following code snippet:

``````unsigned int limit = 4294967296;
int math = 50000;

while(limit > 50000)
{
limit ...``````

5. integer promotion and arithmetic conversion    bytes.com

sarathy wrote: Hi, What is integer promotion? How is it different from arithmetic conversion? > Regards, Sarathy > AFAIK, integer promotion refers specifically to integer types participating in a binary operation (read: sub-expression) where the types of operands must be identical (+ - * / % | ^ &). E.g., char c; short s; unsigned u; long l; If I am ...

6. Arithmetic/Comparison between different integer types    bytes.com

Frederick Gotham I just want to clarify my understanding of arithmetic and comparison between two different integer types. Phase (1): Integer Promotion ---------- All of the following types always get promoted to "signed int": signed char signed short All of the following types get promoted to "signed int" if it has sufficient range on the platform; otherwise, they go to "unsigned ...