/* 
 * Program to get one line of text from stdin and echo (using recursion).
 */
#include <stdio.h>

void echo(void);

int main(void) {
	printf("enter a line of of text\n");
	echo();
	return 0;
}

/* 
 * read characters from stdin until end of line and echo 
 */
void echo(void) {
	int input = getchar();
	if ((input == EOF) || (input == '\n')) {
		putchar('\n');
	} 
	else {
		putchar(input);
		echo();
	}
}