View Compilation Error

722738_0_0_13076.cpp: In function `int main()':
722738_0_0_13076.cpp:4: error: `cin' undeclared (first use this function)
722738_0_0_13076.cpp:4: error: (Each undeclared identifier is reported only once for each function it appears in.)
722738_0_0_13076.cpp:9: error: `cout' undeclared (first use this function)
722738_0_0_13076.cpp:9: error: `endl' undeclared (first use this function)