help about g++

tonytop

[fresher@HRC prgm]$ g++ -o t1 t1.cpp
In file included from /usr/include/c++/3.2/backward/iostream.h:31,
                 from t1.cpp:1:
/usr/include/c++/3.2/backward/backward_warning.h:32:2: warning: #warning This file includes at least one deprecated or antiquated header. Please consider using
one of the 32 headers found in section 17.4.1.2 of the C++ standard. Examples include substituting the <X> header for the <X.h> header for C++ includes, or <sstream> instead of the deprecated header <strstream.h>. To disable this warning use -Wno-deprecated.

what's that mean?

tonytop

怎么没人帮帮我？
上面那些提示什么意思？

kj501

警告而已，建议你最好使用<iostream>而不是<iostream.h>。

tonytop

最初由 kj501 发布
警告而已，建议你最好使用<iostream>而不是<iostream.h>。

用 iostream的时候，提示又变成如下这些了：

[fresher@HRC prgm]$ g++ -o t2 t2.cpp
t2.cpp: In function `int main()':
t2.cpp:5: `cout' undeclared (first use this function)
t2.cpp:5: (Each undeclared identifier is reported only once for each function
   it appears in.)
t2.cpp:5: `endl' undeclared (first use this function)
[fresher@HRC prgm]$

viper

这样的英文查查字典就可以知道意思了呀

libinary

#include <iostream>

using namespace std;

int
main(void)
{.......

tonytop

最初由 libinary 发布
#include <iostream>
            ~~~~~~~~~~~~~~~~~~改成这种不行啊，编译通不过  

using namespace std;

int
main(void)
{.......

libinary

怎么个通不过法，提示

kj501

把cout改成std::cout，把endl改成std::endl。

viper

这下总该成功了吧？：）