foo.cpp:1:1: error: 'include' does not name a type
foo.cpp: In function 'int main()':
foo.cpp:7:25: error: 'stdin' was not declared in this scope
foo.cpp:7:30: error: 'freopen' was not declared in this scope
foo.cpp:8:27: error: 'stdout' was not declared in this scope
foo.cpp:10:29: error: 'scanf' was not declared in this scope
foo.cpp:17:14: error: 'printf' was not declared in this scope
foo.cpp:19:13: error: 'fclose' was not declared in this scope