long long integer is not working in C(UNIX+AIX6.1)

Question

I am using cc compiler on AIX 6.1 (Unix)

#include<stdio.h>

int main()
{
    long long var;
    scanf("%lld",&var);
    printf("%lld",var);
    return 0;
}

/* When I enter 16 digit number for above code its working*/

========================================

But I am not sure why below code is not showing correct value

#include<stdio.h>

int main()
{
    long long var=1234567890123456;
    printf("%lld",var);
    return 0;
}

Please Help?

After fixing the missing semicolon, it seems to work fine: http://ideone.com/2Ge1w0 — Vaughn Cato, Aug 12 '13 at 04:51
Does this work? `long long var=1234567890123456LL;` (And what value is being printed?) — rici, Aug 12 '13 at 05:08
Thank you rici...long long var=1234567890123456LL; is working — Shrirang Kumbhar, Aug 14 '13 at 13:04

score 0 · Answer 1 · answered Aug 12 '13 at 04:58

0

Usually %lld works for cc. Try %I64d

answered Aug 12 '13 at 04:58

Scotty Bauer

1,277
9
14

Scotty, Could you please tell me what is objdump and how to objdump a C code? – Shrirang Kumbhar Aug 14 '13 at 13:06
@sku, What objdump does is disassembles the compiled C file from binary to assembly instruction. I asked you to obj dump it because sometimes the compiler makes assumptions about your code that you didn't mean. You can read more about objdump here: http://www.thegeekstuff.com/2012/09/objdump-examples/ – Scotty Bauer Aug 14 '13 at 14:54

chux - Reinstate Monica · Accepted Answer · 2013-08-12T18:45:30.670

As @rici points out, the problem is with the var assignment.

// long long var=1234567890123456;
long long var=1234567890123456LL;  // append LL
printf("%lld",var);

1234567890123456 was too large for int and unsigned in OP environment. To specify higher values, use the desire suffix.

I suspect 1015724736 was printed out by the OP originally as 1234567890123456 % 4294967296. 4294967296 being the assumed range of of OP's unsigned ( 0 to 4294967295).

long long integer is not working in C(UNIX+AIX6.1)

I am using cc compiler on AIX 6.1 (Unix)

2 Answers2