View Compilation Error

816245_0_0_16215.cpp: In function `int main()':
816245_0_0_16215.cpp:7: error: `memset' undeclared (first use this function)
816245_0_0_16215.cpp:7: error: (Each undeclared identifier is reported only once for each function it appears in.)
816245_0_0_16215.cpp:10: error: `cin' undeclared (first use this function)