Bitwise operations on unsigned long long in c

Question

I've stumbled upon a following problem, could anyone please help? I'm trying to use bitwise operations, and I'm expecting this to print the value of 2^50. The output, however, is 0. The maximum I can get it to print is 2^31, which is supposed to be the maximum of normal int, right? So am I doing something terribly wrong here? Thanks in advance.

#include<stdio.h>
#include<inttypes.h> 
int main(void)  
{
uint64_t x=(1<<50);
printf("%"PRIu64,x);
return 0;
}

That 1 is not a `uint64_t` yet. – harold Oct 31 '14 at 22:31 — harold, Oct 31 '14 at 22:31

score 4 · Accepted Answer · answered Oct 31 '14 at 22:31

4

You have to make your constant an unsigned long long type, which guarantees at least 64 bits in size:

uint64_t x=(1LLU<<50);

answered Oct 31 '14 at 22:31

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Bitwise operations on unsigned long long in c

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