Bit Shiftting

BitTest · 05-08-2003

Hello All,

I'm trying to shift bit0 as follows:

unsigned long int tim;

tim = 1;

tim = tim << 31;

printf("tim = %ld",tim);

output: stc = -2147483648

However, I'm expecting to be -> 0x80000000 (+2147483648)

Why i get the negative number? By the way I'm building 32-bit console application under borland C++ and size of long is 4 bytes.

**orbitz** · 05-08-2003

Because %ld is not an unsigned format.

**stumon** · 05-08-2003

Code:

#include <stdio.h>
int main()
{
	unsigned int tim = 1;

	tim <<= 31;

	printf("tim = %u\n",tim);

	return 0;
}

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