/*
 * Program to read line of text and print in reverse.
 */
#include <stdio.h>

void reverse(void);

int main(void) {
	printf("enter line of text:\n");
	reverse();
	putchar('\n');
	return 0;
}

/* read characters up to end of line and print in reverse */
void reverse(void) {
    /* 
     * getchar is defined to return an 'int' rather than a 'char'
     * so it can return a special value for end of input
     */
	int inchar = getchar();
	if (inchar != '\n') {
		reverse(); /* read and print rest of line */
		putchar(inchar);
	}
}