Thread: short value to char

I suppose you are not looking for something like this:

Code:

short x = 120;
char y;

...
y = x;

You may need to write:

Code:

y = (char)x;

if the compiler issues a warning for "loss of precision".

--
Mats

Assuming that sizeof(short) is 2, you can do this;

Code:

#include <stdio.h>

typedef union
{
     short short_value;
     char char_value[2];
} Converter;

int main()
{
     Converter c;
     c.short_value = 120;
     
  
     fprintf(stdout, "%d %d\n", x.char_value[0], x.char_value[1]);    /* print the two chars as int values */
}

Note that the values output are machine dependent (they depend on endianness).

You can also do this via bit fiddling, or by manipulation of a pointer, but I'll leave that as a further exercise. The technique above will, at least, give the same values that you should obtain via bit fiddling.

Originally Posted by downfall80

I need to get first 8 bits in one char and last 8 bits to another char.

Why didn't you just say that in the first place? Read the bit-shifting FAQ. Shift by the number of bits in a byte. (Hint: CHAR_BIT)


Quzah.