tail the last 10 lines of a file.

1 files changed, 10 insertions, 4 deletions

diff --git a/tail.c b/tail.c
index e92992d..abd57c8 100644
--- a/tail.c
+++ b/tail.c
@@ -1,4 +1,5 @@
 #include <stdio.h>
+#include <string.h>
 
 int main(int argc, const char *argv[])
 {
@@ -6,15 +7,20 @@ int main(int argc, const char *argv[])
   if (file) {
     int current_position = ftell(file);
     int character;
+    int lines_found = 0;
+    int lines_to_print = 10;
 
     fseek(file, 0L, SEEK_END);
 
     current_position = ftell(file);
-    printf("file size: %d\n", current_position);
+    while(--current_position >= 0) {
+      fseek(file, current_position, SEEK_SET);
+      if (getc(file) == '\n' && ++lines_found == lines_to_print) {
+        break;
+      }
+    }
 
-    while(current_position >= 0) {
-      fseek(file, --current_position, SEEK_SET);
-      character = getc(file);
+    while( (character = getc(file)) != EOF) {
       putchar(character);
     }