That's my code:
It works good on my mac.
But I'm not sure is that the problem of Gcc version or not.
they said the sstream and string header are wrong.
1779655.134485/Main.c:8:19: fatal error: sstream: No such file or directory
compilation terminated.
here is the hint
#include <iostream>
#include <sstream>
#include <string>
using namespace std;
You are trying to include C++ header file in your C program.
Gcc is C compiler.
You need to rename Main.c to Main.cpp and use g++ compiler...
Related
I'm beginning to learn C++ programming, I'm using the visual studio editor.
This is the simple code I entered:
#include <stdio.h>
#include <iostream>
using namespace std;
int main(){
cout << "Hello, comply";
return 0;
}
I only added the "#include iostream" because my textbook says that is needed to let the program output to screen. I tried to compile and run in my command prompt and its giving me some error:
**C:\Users\edika\Desktop>gcc comply.c -o comply.exe
comply.c:2:22: fatal error: iostream: No such file or directory
#include <iostream>
^
compilation terminated.**
What am I doing wrong?
you're using a C compiler for C++. Additionally, your file extension should be *.cpp to indicate C++ code.
You're using gcc, you need g++.
Install G++, change your file name to comply.cpp, then run "g++ comply.cpp -o comply.exe"
I'm very new in Ubuntu and programming C++ on Ubuntu using Geany.
The problem I have here is that:
the classes i want to iclude to my project will receive an error,
I type,
#include <vector>
the error given here is,
fatal error: vector: No such file or directory
also I cannot use namespace std,
typing using namespace std returns the following error,
error: unknown type name 'using'
Here is the code:
#include <stdio.h> //no problem here
#include "stdlib.h" //no problem here
#include <vector> //this is a problem (lets say it returns error 1)
using namespace std; //this is a problem (lets say it returns error 2)
int main(int argc, char **argv)
{
return 0;
}
This sounds like you are using the wrong compiler to compile your C++ code. For example, by invoking gcc test.cpp the C++ file is actually compiled as C and you receive errors such as the one you posted - there is no vector header in C and there is also no using keyword.
If you are using gcc, the correct way to invoke the compiler to compile C++ is via the g++ symlink, i.e. g++ test.cpp
If you are using clang, the executable is called clang++ instead.
Both compilers support the -x parameter to manually change the language to C++, although in that case you also have to specify that the compiler needs to link your files with the C++ standard library. For example: gcc -x c++ test.cpp -lstdc++
I am trying to compile the following code:
#include<stdio.h>
#include <algorithm.h>
int main() {
printf("hello, world!\n");
return 0;
}
But when I run emcc test.c -o test.html I get the following error:
fatal error: 'algorithm.h' file not found
When I remove the line that imports algorithm.h the code compiles perfectly.
Why is this happening? I was under the impression that algorithm.h was part of the standard library.
Edit:
I changed the name of the file from test.c to test.cpp, I updated the header names to <cstdio> and <algorithms>, and I also set -std=c++11 and it works now.
If this is C++ use
#include <cstdio>
in place of stdio.h and
#include <algorithm>
instead
In standard C++ there is no <algorithm.h> - there is only <algorithm>
Also in C++ the stdio header is both accessible from <cstdio> and <stdio.h> for compatibility.
Also since you are including algorithm the file extension should be .cc or .cpp and not .c or else emcc/gcc will treat it as a C source instead of a C++ one.
In my makefile on this project, I am specifying 3 location for the compiler to find #includes.
INCLUDES=-I. -I/home/kelly/xerces/xerces-c-3.1.1/src -I/home/kelly/Utilities_New
When I compile the following sample code with the command line found in the comment:
#include <iostream>
#include <string>
#include <sstream>
#include <iomanip>
#include <xercesc/util/XMLString.hpp>
using namespace std;
/*
g++ -I. -I/home/kelly/xerces/xerces-c-3.1.1/src -I/home/kelly/Utilities_New test.cpp
*/
int main(int argc, char* argv[])
{
cout << "this works" << endl;
}
In file included from /home/kelly/Utilities_New/string.h:5:0,
from /home/kelly/xerces/xerces-c-3.1.1/src/xercesc/framework/XMLBuffer.hpp:28,
from /home/kelly/xerces/xerces-c-3.1.1/src/xercesc/util/XMLString.hpp:26,
from test.cpp:7:
/home/kelly/Utilities_New/defs.h:26:21: fatal error: windows.h: No such file or directory
compilation terminated.
Clearly the compiler has decided that when it processes the Xerces #includes and finds string.h in the Utilities_New directory, it has found what it needs and stops there.
This other string.h was written by another programmer and I am attempting to use his library.
I thought that the standard locations were searched first. I'm a little lost here. I may be missing something super obvious to you all.
Also, wasn't there some rule about #include files that had <> vs. "" around them and where the compiler was supposed to look?
The standard locations are searched last.
#include "blah" is identical to #include <blah> unless blah is found in the same directory as the file that tries to include it. (And unless you use the rare and gcc-specific -iquote option).
For more information see here.
I'm trying to use Boost's Dynamic_bitset class for a project, and I (believe I) have taken whichever subset of files I needed from the complete library. Now I'm doing an
#include "boost/dynamic_bitset.hpp" inside my manager.cpp file, and when compiling I get this:
In file included from manager.cpp:4:0:
boost/dynamic_bitset.hpp:15:51: fatal error: boost/dynamic_bitset/dynamic_bitset.hpp: No such file or directory
The file ierarchy inside the project folder goes like this:
proj/extras.h
proj/Makefile~
proj/manager.cpp
proj/boost
proj/boost/limits.hpp
proj/boost/dynamic_bitset.hpp
proj/boost/mpl
proj/boost/mpl/if.hpp
proj/boost/mpl/has_xxx.hpp
proj/boost/iterator.hpp
proj/boost/static_assert.hpp
proj/boost/dynamic_bitset
proj/boost/dynamic_bitset/dynamic_bitset.hpp
proj/boost/dynamic_bitset/config.hpp
proj/boost/config
proj/boost/config/select_platform_config.hpp
proj/boost/config/select_compiler_config.hpp
proj/boost/config/user.hpp
proj/boost/config/suffix.hpp
proj/boost/config/select_stdlib_config.hpp
proj/boost/dynamic_bitset_fwd.hpp
proj/boost/config.hpp
proj/boost/type_traits
proj/boost/type_traits/is_same.hpp
proj/boost/type_traits/is_pointer.hpp
proj/boost/type_traits/remove_pointer.hpp
proj/boost/type_traits/remove_const.hpp
proj/boost/type_traits/is_base_and_derived.hpp
proj/boost/type_traits/detail
proj/boost/type_traits/detail/bool_trait_def.hpp
proj/boost/type_traits/detail/yes_no_type.hpp
proj/boost/pending
proj/boost/pending/integer_log2.hpp
proj/boost/detail
proj/boost/detail/limits.hpp
proj/boost/detail/dynamic_bitset.hpp
proj/boost/detail/workaround.hpp
proj/boost/lowest_bit.hpp
proj/Makefile
proj/generator.cpp~
proj/generator.cpp
This same project compiles fine on my university's linux systems(g++ 4.2.4 there but I doubt it matters), but fails to do so (with the above error) on my Ubuntu laptop. Why isn't it finding the file since it evidently exists?
All my includes are as such:
#include <cstdlib>
#include <cstdio>
#include <iostream>
#include "boost/dynamic_bitset.hpp"
#include <cmath>
#include <list>
#include <unistd.h>
#include <sys/sem.h>
#include <sys/shm.h>
#include <errno.h>
#include <wait.h>
#include <time.h>
#include "extras.h"
compilation is done simply with
g++ -o manager manager.c
or
g++ -Iboost -o manager manager.c
if I want to explicitely include the (local..) folder
-I .
At least if you are compiling in the same directory that contains boost.
You wrote -Iboost and #include "boost/…". So it looks in ./boost if there is a boost subdirectory.