k9core

commit 642d6f396c0e196702fa88949597e783350bf58d
parent 61a4887fb1124906d732c999461727505dd7a04a
Author: qorg11 <qorg@vxempire.xyz>
Date:   Wed,  5 Aug 2020 12:28:59 +0200

added head

Diffstat:
A
src/head.c
 | 
37
+++++++++++++++++++++++++++++++++++++

1 file changed, 37 insertions(+), 0 deletions(-)
diff --git a/src/head.c b/src/head.c
@@ -0,0 +1,37 @@
+#include <stdio.h>
+#include <stdlib.h>
+
+int
+head(FILE *file, int lines)
+{
+  int a;
+  int c = 0;
+  while((a = fgetc(file)) != EOF)
+    {
+      if(a == '\n')
+        {
+          ++c;
+        }
+      putchar(a);
+      if(c == lines)
+        return lines;
+    }
+  return lines;
+
+}
+
+int
+main(int argc, char *argv[])
+{
+  int lines = 10;
+  if(argc == 1)
+    head(stdin,lines);
+  if(argc == 2)
+    head(fopen(argv[1],"r"),lines);
+  if(argc == 3)
+    {
+      lines = abs(atoi(argv[1]));
+      head(fopen(argv[2],"r"),lines);
+    }
+  return 0;
+}