View Compilation Error

0_0_6175594_21047.cpp:1: error: expected constructor, destructor, or type conversion before '<' token
0_0_6175594_21047.cpp:1: error: expected `,' or `;' before '<' token
0_0_6175594_21047.cpp:4: error: `main' must return `int'
0_0_6175594_21047.cpp: In function `int main(...)':
0_0_6175594_21047.cpp:7: error: `memset' undeclared (first use this function)
0_0_6175594_21047.cpp:7: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_6175594_21047.cpp:19: error: `cin' undeclared (first use this function)
0_0_6175594_21047.cpp:27: error: `cout' undeclared (first use this function)
0_0_6175594_21047.cpp:27: error: `endl' undeclared (first use this function)