View Compilation Error

0_0_4844121_17219.cpp: In function `bool slove_case()':
0_0_4844121_17219.cpp:142: error: `cout' undeclared (first use this function)
0_0_4844121_17219.cpp:142: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_4844121_17219.cpp:142: error: `endl' undeclared (first use this function)