undefined reference to std cout

Question

Shall this be the example    include  lt iostream gt  using namespace std  int main         cout  lt  lt   Hola  moondo  n       It throws the error   gcc -c main cpp gcc -o edit main o  main o  In function  main   main cpp   text 0xa   undefined reference to  std  cout  main 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   char const    main o  In function    static initialization and destruction 0 int int    main cpp   text 0x3d   undefined reference to  std  ios base  Init  Init    main cpp   text 0x4c   undefined reference to  std  ios base  Init   Init    collect2  error  ld returned 1 exit status make       qs  Error 1   Also  this example    include  lt iostream gt  int main         std  cout lt  lt  Hola  moondo  n       throws the error   gcc -c main cpp gcc -o edit main o  main o  In function  main   main cpp   text 0xa   undefined reference to  std  cout  main 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   char const    main o  In function    static initialization and destruction 0 int int    main cpp   text 0x3d   undefined reference to  std  ios base  Init  Init    main cpp   text 0x4c   undefined reference to  std  ios base  Init   Init    collect2  error  ld returned 1 exit status make       qs  Error 1   Note  I am using Debian Wheezy

User · Answer

Assuming code cpp is the source code  the following will not throw errors  make code   code  Here the first command compiles the code and creates an executable with the same name  and the second command runs it  There is no need to specify g   keyword in this case

User · Answer

Yes  using g   command worked for me    g   my source code cpp

User · Answer

Makefiles  If you re working with a makefile and you ended up here like me  then this is probably what you re looking or   If you re using a makefile  then you need to change cc as shown below  my executable   main o     cc -o my executable main o   to  CC   g    my executable   main o       CC  -o my executable main o

User · Answer

Compile the program with   g   -Wall -Wextra -Werror -c main cpp -o main o                            lt - For listing all warnings when your code is compiled    as cout is present in the C   standard library  which would need explicit linking with -lstdc   when using gcc  g   links the standard library by default   With gcc   g   should be preferred over gcc   gcc main cpp -lstdc   -o main o

[c++] undefined reference to 'std::cout'

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