View Compilation Error

942105_0_0_19866.cpp: In function `void printArrow(Arrow)':
942105_0_0_19866.cpp:12: error: `cout' undeclared (first use this function)
942105_0_0_19866.cpp:12: error: (Each undeclared identifier is reported only once for each function it appears in.)
942105_0_0_19866.cpp:18: error: `endl' undeclared (first use this function)
942105_0_0_19866.cpp: In function `int main()':
942105_0_0_19866.cpp:33: error: `cin' undeclared (first use this function)