commit - 5a3cc2ca160febcfc5fc81eb508016154cce2510
commit + 64af102f736c4ef596d82f1a48e3536927ce32b0
blob - a07c8fabfb78cd087ef005abf009b4772cec9236
blob + e9b378a2dd0b8cbeff0753c414845268108a3fba
--- 1-20.c
+++ 1-20.c
@@ -2,59 +2,3 @@
  * number of blanks to space to the next tab stop. Assume a fixed set of tab
  * stops, say every n columns. Should n be a variable or a symbolic parameter?
  * */
-
-#include <stdio.h>
-
-#define MAXLINE 1000		/* maximum input line size */
-
-int getlin(char line[], int maxline);
-void reverse(char s[]);
-int length(char s[]);
-
-int main() {
-	int len;				/* current line length */
-	char line[MAXLINE];		/* current input line */
-
-	while ((len = getlin(line, MAXLINE)) > 0) {
-		reverse(line);
-		printf("%s", line);
-	}
-	return 0;
-}
-
-/* getlin: read a line into s, return length */
-int getlin(char s[], int lim) {
-	int c, i;
-
-	for (i=0; i<lim-1 && (c=getchar())!=EOF && c!='\n'; ++i)
-		s[i] = c;
-	if (c == '\n') {
-		s[i] = c;
-		++i;
-	}
-	s[i] = '\0';
-	return i;
-}
-
-/* length: returns the length of character string s */
-int length(char s[]) {
-	int i = 0;
-	while (s[i] != '\0')
-		i++;
-	return i;
-}
-
-/* reverse: reverses the character string s */
-void reverse(char s[]) {
-	char temp;
-	int i = 0;
-	int j = length(s) - 1;
-	/* don't reverse newline */
-	if (s[j] == '\n')
-		j--;
-	for (; i < j; i++, j--) {
-		temp = s[i];
-		s[i] = s[j];
-		s[j] = temp;
-	}
-}