View Compilation Error

0_0_3871757_16414.cpp:2: error: expected constructor, destructor, or type conversion before '<' token
0_0_3871757_16414.cpp:2: error: expected `,' or `;' before '<' token
0_0_3871757_16414.cpp: In function `int main()':
0_0_3871757_16414.cpp:19: error: `ios' has not been declared
0_0_3871757_16414.cpp:19: error: `sync_with_stdio' undeclared (first use this function)
0_0_3871757_16414.cpp:19: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_3871757_16414.cpp:20: error: `cin' undeclared (first use this function)
0_0_3871757_16414.cpp:49: error: `cout' undeclared (first use this function)
0_0_3871757_16414.cpp:49: error: `endl' undeclared (first use this function)