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View Compilation Error

0_0_31076341_19869.cpp: In function 'int main()':
0_0_31076341_19869.cpp:4:8: error: 'cin' was not declared in this scope
  while(cin>>n){
        ^
0_0_31076341_19869.cpp:4:8: note: suggested alternative:
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/x86_64-w64-mingw32/bits/stdc++.h:74:0,
                 from 0_0_31076341_19869.cpp:1:
GCC4.9.2/x86_64-w64-mingw32/include/c++/iostream:60:18: note:   'std::cin'
   extern istream cin;  /// Linked to standard input
                  ^
0_0_31076341_19869.cpp:6:4: error: 'cout' was not declared in this scope
    cout<<"CRASH "<<n;
    ^
0_0_31076341_19869.cpp:6:4: note: suggested alternative:
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/x86_64-w64-mingw32/bits/stdc++.h:74:0,
                 from 0_0_31076341_19869.cpp:1:
GCC4.9.2/x86_64-w64-mingw32/include/c++/iostream:61:18: note:   'std::cout'
   extern ostream cout;  /// Linked to standard output
                  ^
0_0_31076341_19869.cpp:10:2: error: 'cout' was not declared in this scope
  cout<<"NO CRASH";
  ^
0_0_31076341_19869.cpp:10:2: note: suggested alternative:
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/x86_64-w64-mingw32/bits/stdc++.h:74:0,
                 from 0_0_31076341_19869.cpp:1:
GCC4.9.2/x86_64-w64-mingw32/include/c++/iostream:61:18: note:   'std::cout'
   extern ostream cout;  /// Linked to standard output
                  ^


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