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?

Answer 1

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.

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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).