// A demonstration program
#include <stdio.h>
#if 0 /* */
#define DUMMY() \
	if (1);
#endif

#define M\

\
 
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");
}