sizeof « bit « C Data Type Q&A

1. What's sizeof(size_t) on 32-bit vs the various 64-bit data models?    stackoverflow.com

On a 64-bit system, sizeof(unsigned long) depends on the data model implemented by the system, for example, it is 4 bytes on LLP64 (Windows), 8 bytes on LP64 (Linux, etc.). ...

2. Why sizeof() differs on 64bit cpu?    stackoverflow.com

Consider following example:

#include <stdio.h>
#include <inttypes.h>

struct A {
        uint32_t i1;
        uint32_t i2;
       ...

3. printf with sizeof on 32 vs 64 platforms: how do I handle format code in platform independant manner?    stackoverflow.com

Very easy question for you Gurus but I haven't found the answer yet with about a good amount of searching. I have some code that prints the amount of memory used by ...

4. Number of bits in a data type    stackoverflow.com

I have two tasks for an assignment, one return the number of bits in type int on any machine. I thought I would write my function like so:

int CountIntBitsF() {
 ...

5. Is there a bit-equivalent of sizeof() in C?    stackoverflow.com

Sizeof() doesn't work when applied to bitfields:

# cat p.c
  #include<stdio.h>
  int main( int argc, char **argv )
  {
    struct { unsigned int bitfield : 3; ...

6. Why struct size is multiple of 8 when consist a int64 variable In 32 bit system    stackoverflow.com

In C Programming language and I use 32 bit system, I have a struct and this struct size is multiple of four. But I look at Linker Map file and size is multiple ...

7. How do I tell the size of the smallest unit of information in C?    stackoverflow.com

In C, there's the sizeof operator to determine the byte-size of a given data type or object. Likewise, there's CHAR_BIT from <limits.h> which is defined to reflect the number of bits in ...

8. type conversion warnings in porting 32 bit app to 64 bit app using sizeof operator    stackoverflow.com

I am porting an application from 32 bit to 64 bit. The application includes gSoap generated ANSI C source code. The prototypes of several soap functions include int data ...