View Compilation Error

22393_0_4991.cpp: In function `int main()':
22393_0_4991.cpp:9: error: `cin' undeclared (first use this function)
22393_0_4991.cpp:9: error: (Each undeclared identifier is reported only once for each function it appears in.)
22393_0_4991.cpp:11: error: `cout' undeclared (first use this function)
22393_0_4991.cpp:11: error: `endl' undeclared (first use this function)
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