cout was not declared in this scope

Question

I have a C   program   test cpp   include lt iostream gt   int main         char t    f       char  t1      char   t2      cout lt  lt t       this causes an error  cout was not declared in this scope     return 0      I get the error       cout  was not declared in this scope   Why

User · Answer

Use std  cout  since cout is defined within the std namespace  Alternatively  add a using std  cout  directive

User · Answer

Put the following code before int main     using namespace std    And you will be able to use cout   For example    include lt iostream gt  using namespace std  int main        char t    f       char  t1      char   t2      cout lt  lt t              return 0      Now take a moment and read up on what cout is and what is going on here  http   www cplusplus com reference iostream cout     Further  while its quick to do and it works  this is not exactly a good advice to simply add using namespace std  at the top of your code  For detailed correct approach  please read the answers to this related SO question

[c++] 'cout' was not declared in this scope

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