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// A demonstration program
#include <stdio.h>
#if 0 /* */
#define DUMMY() \
if (1);
#endif
// Test preprocessor expressions with parentheses
#if ((0))
a
#elif ((1))
b
#endif
/** @file LexCPP.cxx
<file>
<file >filename</file>
LexCPP.cxx.
</file>
**/
/** Unknown doc keywords so in SCE_C_COMMENTDOCKEYWORDERROR:
@wrong LexCPP.cxx
<wrong>filename</wrong>
**/
#define M\
\
// Test preprocessor active branches feature
#if HAVE_COLOUR
// Active
#endif
#if NOT_HAVE_COLOUR
// Inactive
#endif
#if FEATURE==2
// Active
#endif
#if FEATURE==3
// Inactive
#endif
#if VERSION(1,2)==3
// Active
#endif
#if VERSION(1,2)==4
// Inactive
#endif
#undef HAVE_COLOUR
#if HAVE_COLOUR
// Inactive
#endif
#define MULTIPLY(a,b) a*b
#if MULTIPLY(2,3)==6
// Active
#endif
int main() {
double x[] = {3.14159,6.02e23,1.6e-19,1.0+1};
int y[] = {75,0113,0x4b};
printf("hello world %d %g\n", y[0], x[0]);
// JavaScript regular expression (14) tests
let a = /a/;
let b = /[a-z]+/gi;
// Escape sequence (27) tests
printf("\'\"\?\\\a\b\f\n\r\t\v \P");
printf("\0a \013a \019");
printf("\x013ac \xdz");
printf("\ua34df \uz");
printf("\Ua34df7833 \Uz");
}
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