由#define定义的常量输出

#include <stdio.h>
#define SPEED 55
int main()
{
   printf(Now, the speed limit here is %i.\n,SPEED);
   printf(But I clocked you doin' %i.\n,SPEED+15);
   printf(Didn't you see that %i MPH sign?\n,SPEED);
   return(0);
}