Unsigned long with negative value
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by egiakoum1984
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Published on 2010-03-16T15:45:06Z
Indexed on
2010/03/16
15:51 UTC
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Hit count: 292
Filed under:
c
Please see the simple code below:
#include <iostream>
#include <stdlib.h>
using namespace std;
int main(void)
{
unsigned long currentTrafficTypeValueDec;
long input;
input=63;
currentTrafficTypeValueDec = (unsigned long) 1LL << input;
cout << currentTrafficTypeValueDec << endl;
printf("%u \n", currentTrafficTypeValueDec);
printf("%ld \n", currentTrafficTypeValueDec);
return 0;
}
Why printf() displays the currentTrafficTypeValueDec (unsigned long) with negative value?
The output is:
9223372036854775808
0
-9223372036854775808
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