Question

I want to sprintf() an unsigned long long value in visual C++ 6.0 (plain C).

char buf[1000]; //bad coding  unsigned __int64 l = 12345678;  char t1[6] = 'test1';  char t2[6] = 'test2';  sprintf(buf, '%lli, %s, %s', l, t1, t2); 

gives the result

12345678, (null), test1 

(watch that test2 is not printed)

and l = 123456789012345 it gives an exception handle

any suggestions?

Answer 1

To print an unsigned __int64 value in Visual C++ 6.0 you should use %I64u, not %lli (refer to this page on MSDN). %lli is only supported in Visual Studio 2005 and later versions. So, your code should be:

sprintf(buf, '%I64u, %s, %s', l, t1, t2);