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wdliming

Today ,I have learned the bit field feature of C Language in "The C Programming Language",so I search some exercise about bit field,and then I find the C Program source code below:

Code:

#include <stdio.h>

struct mybitfields
{
    unsigned short a : 4;
    unsigned short b : 5;
    unsigned short c : 7;
}test;

int main(void)
{
    int i = 0;
    test.a = 2;
    test.b = 3;
    test.c = 0;
    i = *((short *)&test);
    printf("%d",i);
    return 0;
}

After compile and run in X86,the result is 50!?I try to understand why,but I fail,so could some one tell me why and how get the result,thank you very much! ^@^
(compile environment Windows XP sp3,TDM-GCC 4.6.1,X86 architecture)

wdliming Go4Expert Member
15Mar2012,17:34
	Today ,I have learned the bit field feature of C Language in "The C Programming Language",so I search some exercise about bit field,and then I find the C Program source code below: Code: #include <stdio.h> struct mybitfields { unsigned short a : 4; unsigned short b : 5; unsigned short c : 7; }test; int main(void) { int i = 0; test.a = 2; test.b = 3; test.c = 0; i = ((short )&test); printf("%d",i); return 0; } After compile and run in X86,the result is 50!?I try to understand why,but I fail,so could some one tell me why and how get the result,thank you very much! ^@^ (compile environment Windows XP sp3,TDM-GCC 4.6.1,X86 architecture)