View Compilation Error

0_0_1228938_12712.cpp:1: error: expected constructor, destructor, or type conversion before '<' token
0_0_1228938_12712.cpp:1: error: expected `,' or `;' before '<' token
0_0_1228938_12712.cpp: In function `int main()':
0_0_1228938_12712.cpp:16: error: `scanf' undeclared (first use this function)
0_0_1228938_12712.cpp:16: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_1228938_12712.cpp:21: error: `memset' undeclared (first use this function)
0_0_1228938_12712.cpp:23: error: `getchar' undeclared (first use this function)
0_0_1228938_12712.cpp:50: error: `printf' undeclared (first use this function)