View Compilation Error

0_0_11043819_15006.cpp: In function `void work()':
0_0_11043819_15006.cpp:35: error: `cout' undeclared (first use this function)
0_0_11043819_15006.cpp:35: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_11043819_15006.cpp: In function `int main()':
0_0_11043819_15006.cpp:46: error: `cout' undeclared (first use this function)