fix reverse.c

clalexni · web-flow · commit 77b23308d159 · 2023-02-17T19:01:52.000-06:00
diff --git a/chapter_1/exercise_1_19/reverse.c b/chapter_1/exercise_1_19/reverse.c
@@ -31,6 +31,10 @@ int get_line(char line[], int max_line_len)
     ++i;
   }
 
+  // flush out input stream if exceeding MAXLINE limit
+  while (i >= max_line_len - 1 && (c = getchar()) != '\n')
+    ;
+
   if (c == '\n')
   {
     line[i] = '\n';
@@ -58,7 +62,7 @@ void reverse(char line[])
   int i_back = length(line);
   char temp;
 
-  i_back -= 2;
+  i_back = line[i_back - 1] == '\n'? i_back - 2: i_back - 1;
   while (i_back > i_front)
   {
     temp = line[i_front];

Original file line number	Diff line number	Diff line change
`@@ -31,6 +31,10 @@ int get_line(char line[], int max_line_len)`
`31`	`31`	`++i;`
`32`	`32`	`}`
`33`	`33`
	`34`	`+ // flush out input stream if exceeding MAXLINE limit`
	`35`	`+ while (i >= max_line_len - 1 && (c = getchar()) != '\n')`
	`36`	`+ ;`
	`37`	`+`
`34`	`38`	`if (c == '\n')`
`35`	`39`	`{`
`36`	`40`	`line[i] = '\n';`
`@@ -58,7 +62,7 @@ void reverse(char line[])`
`58`	`62`	`int i_back = length(line);`
`59`	`63`	`char temp;`
`60`	`64`
`61`		`- i_back -= 2;`
	`65`	`+ i_back = line[i_back - 1] == '\n'? i_back - 2: i_back - 1;`
`62`	`66`	`while (i_back > i_front)`
`63`	`67`	`{`
`64`	`68`	`temp = line[i_front];`