C
c
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#include <stdio.h>
#include <assert.h>
//#define DBUG
#ifdef DBUG
#define ASSERT(EXPR) \
do{ \
assert(EXPR); \
} while(0)
#else
#define ASSERT(expr) ;
#endif
// This method is probably impossible:
/*#define ASSERT(expr) \
do{ \
#ifdef DBUG \
assert(expr); \
#endif \
} while(0)
*/
int main()
{
ASSERT(5 < 5);
return 0;
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