Made printf() good!

include/c/stdlib.h

@@ -2,17 +2,18 @@
 #define STDLIB_H
 
 #include <stdint.h>
+#include <syscall.h>
 
-void* malloc(const uint32_t size) { // Use Syscall(3) - Malloc()
+void* malloc(const uint32_t size) { 
     void* ptr = 0;
-    __asm__ volatile ("int $0x80" : : "a"(3), "b"(size));
+    __asm__ volatile ("int $0x80" : : "a"(SYS_MALLOC), "b"(size));
     __asm__ volatile ("movl %%eax, %0" : "=r"(ptr));
 
     return ptr;
 }
 
-void free(const void* ptr) { // Use Syscall(4) - Free()
-    __asm__ volatile ("int $0x80" : : "a"(4), "b"(ptr));
+void free(const void* ptr) { 
+    __asm__ volatile ("int $0x80" : : "a"(SYS_FREE), "b"(ptr));
 }
 
 #endif