Thread: C++ code in 1999

Hi all:

I have a C++ program for me to use, but it is written in 1999, and I notice that the some aspects of C++ program now different from that in 1999, such as "using namespace std" and "#include <cmath>," I wonder where can I get a complete list of changes.

More specifically, I have the following header headers, some of them may be in old style, but I just don't know:

#include <stdio.h>

#include <string.h>

#include <float.h>

#include <values.h>

#include <limits.h>

#include <ostream.h>

#include <assert.h>

#include <stdlib.h>

#include <math.h>

#include <iostream.h>

#include <sys/types.h>

#include <sys/stat.h>

#include <fcntl.h>

#include <unistd.h>

#include <io.h>

#include <fstream.h>

#include <time.h>

#include <malloc.h>

#include <unistd.h>

#include <ctype.h>

Thank!