{2}// A demonstration program {9}#include #if 0 {23}/* */{9} {73}#define DUMMY() \ if (1); {9}#endif {0} {2}// Test preprocessor expressions with parentheses {9}#if ((0)) {75}a{64} {9}#elif ((1)) {11}b{0} {9}#endif {0} {3}/** {17}@file{3} LexCPP.cxx <{17}file{3}> <{17}file{3} >filename LexCPP.cxx. **/{0} {3}/** Unknown doc keywords so in SCE_C_COMMENTDOCKEYWORDERROR: {18}@wrong{3} LexCPP.cxx <{18}wrong{3}>filename **/{0} {9}#define M\ {0}\ {5}int{0} {11}main{10}(){0} {10}{{0} {11}double{0} {11}x{10}[]{0} {10}={0} {10}{{4}3.14159{10},{4}6.02e23{10},{4}1.6e-19{10},{4}1.0{10}+{4}1{10}};{0} {5}int{0} {11}y{10}[]{0} {10}={0} {10}{{4}75{10},{4}0113{10},{4}0x4b{10}};{0} {11}printf{10}({6}"hello world %d %g{27}\n{6}"{10},{0} {11}y{10}[{4}0{10}],{0} {11}x{10}[{4}0{10}]);{0} {2}// JavaScript regular expression (14) tests {0} {5}let{0} {11}a{0} {10}={0} {14}/a/{10};{0} {5}let{0} {11}b{0} {10}={0} {14}/[a-z]+/gi{10};{0} {2}// Escape sequence (27) tests {0} {11}printf{10}({6}"{27}\'\"\?\\\a\b\f\n\r\t\v{6} {27}\P{6}"{10});{0} {11}printf{10}({6}"{27}\0{6}a {27}\013{6}a {27}\01{6}9"{10});{0} {11}printf{10}({6}"{27}\x013a{6}c {27}\xd{6}z"{10});{0} {11}printf{10}({6}"{27}\ua34d{6}f {27}\u{6}z"{10});{0} {11}printf{10}({6}"{27}\Ua34df783{6}3 {27}\U{6}z"{10});{0} {10}}{0}