How to compile a c program in Linux

Question

I made a file hi cpp and I wrote the command given below    include  lt iostream gt  using namespace std  int main        cout  lt  lt   Hello World       cout  lt  lt   I m a C   program     return 0      then I ran it in my RHEL 6 machine with the following command  gcc hi cpp   and I got some errors which are as follows     chankey localhost     gcc hi cpp  tmp cc32bnmR o  In function  main   hi cpp   text 0xa   undefined reference to  std  cout  hi cpp   text 0xf   undefined reference to  std  basic ostream lt char  std  char traits lt char gt   gt  amp  std  operator lt  lt   lt std  char traits lt char gt   gt  std  basic ostream lt char  std  char traits lt char gt   gt  amp   const char    hi cpp   text 0x19   undefined reference to  std  cout  hi cpp   text 0x1e   undefined reference to  std  basic ostream lt char  std  char traits lt char gt   gt  amp  std  operator lt  lt   lt std  char traits lt char gt   gt  std  basic ostream lt char  std  char traits lt char gt   gt  amp   const char     tmp cc32bnmR o  In function    static initialization and destruction 0 int  int    hi cpp   text 0x4c   undefined reference to  std  ios base  Init  Init    hi cpp   text 0x51   undefined reference to  std  ios base  Init   Init     tmp cc32bnmR o   eh frame 0x12   undefined reference to    gxx personality v0  collect2  ld returned 1 exit status  chankey localhost        What do these errors denote  My code is correct then why am I getting errors

User · Answer

For simple test project  g   or make standalone are good options as already answered  g   -o hi hi cpp  or make hi   For real projects  however  the usage of a project manager is required  At the time I write this answer  the most used and open-source is cmake  an alternative could be QT qmake    Following is a simple CMake example  Make sure you installed cmake on your linux distribution apt-get install cmake or yum install cmake  Create a file CMakeLists txt  the name is important  together with your source hi cpp project  quot hi quot    add executable  hi hi cpp    Then compile and run as  cmake   make   hi  This allows the project to scale easily with libraries  sources  and much more  It also makes most IDEs to understand the project properly  Most IDEs accept CMake natively  like kdevelop  qtCreator  etc     You could also generate Visual-Studio or XCode projects from CMake  in case you decide to port the software to other platforms in the future  cmake -G Xcode    will generate  hi xcodeproj  you can load on macOS

User · Answer

Try this    g   -o hi hi cpp   gcc is only for C

User · Answer

To Compile your C   code use -   g   file name cpp -o executable file name   i  -o option is used to show error in the code  ii  if there is no error in the code file  then it will generate an executable file   Now execute the generated executable file      executable file name

User · Answer

You have to use g    as mentioned in other answers   On top of that you can think of providing some good options available at command line  which helps you avoid making ill formed code    g     -O4    -Wall hi cpp -o hi out                       optimize  related to coding mistakes   For more detail you can refer to man g     less

User · Answer

g   1st cpp -o 1st      1st  if you found any error then first install g   using  code as below     sudo apt-get install g    then install g   and use above run code

User · Answer

g   -o foo foo cpp   g    --  Driver for cc1plus compiler  -o   --   Indicates the output file  foo is the name of output file here  Can be any name   foo cpp --  Source file to be compiled  To execute the compiled file simply type    foo

User · Answer

As the other answers say  use g   instead of gcc   Or use make  make hi

User · Answer

Use g    g   -o hi hi cpp   g   is for C    gcc is for C although with the -libstdc   you can compile c   most people don t do this

[c++] How to compile a c++ program in Linux?

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