//unsigned i;
main( void )
{
////// для uchar - OK
{
unsigned char x=2;
printf( "s=%i %ld %ld \n",sizeof(x), - (long) x, (long)-x ); // -2 -2
}
////// для short
{
unsigned short x=2;
printf( "s=%i %ld %ld \n",sizeof(x), - (long) x, (long)-x ); //-2 65534
}
////// для uint - привирает
{
unsigned int x=2;
printf( "s=%i %ld %ld \n",sizeof(x), - (long) x, (long)-x ); //-2 65534
}
////// для ulong - OK
{
unsigned long long x=2;
printf( "s=%i %ld %ld \n",sizeof(x), - (long) x, (long)-x ); //-2 -2
}
//////
}
./a.out
s=1 -2 -2
s=2 -2 -2
s=4 -2 -2
s=8 -2 -2
gcc (GCC) 4.1.2 20061115 (prerelease) (Debian 4.1.1-21)
Не пугайте народ в общем.
