Hello all. I am trying to figure out how ? affects the code.
Can someone please help?
Thank you in advance.
#define BUFSIZE 100
char buf[BUFSIZE]; /* buffer for ungetch */
int bufp = 0; /* next free position in buf */
int getch(void) /* get a (possibly pushed-back) character */
return (bufp > 0) ? buf[--bufp] : getchar(); // ? does what???
void ungetch(int c) /* push character back on input */
if (bufp >= BUFSIZE)
printf("ungetch: too many characters\n");
buf[bufp++] = c;