Mistakes in functions of work with files and with system calls KolibriOS are corrected.

New functions for work with system calls KolibriOS are added. Functions for format output 
are added: printf (), fprintf (), sprintf (), snprintf (), vsnprintf (). For material 
numbers it is meanwhile supported only format output the (%f), and exponential output a (%e)
is not realized yet. 
Functions for format output correctly work only in GCC because TinyC incorrectly works with
the functions containing variable number of arguments.

git-svn-id: svn://kolibrios.org@647 a494cfbc-eb01-0410-851d-a64ba20cac60

programs/develop/ktcc/trunk/libc/stdlib/atoi.c

@@ -0,0 +1,21 @@
+#include "stdio.h"
+#include "stdlib.h"
+#include "ctype.h"
+
+
+/*
+** atoi(s) - convert s to integer.
+*/
+int atoi(char *s)
+{
+  int sign, n;
+  while(isspace(*s)) ++s;
+  sign = 1;
+  switch(*s) {
+    case '-': sign = -1;
+    case '+': ++s;
+    }
+  n = 0;
+  while(isdigit(*s)) n = 10 * n + *s++ - '0';
+  return (sign * n);
+}