View Compilation Error

0_0_20530842_22483.cpp:2:1: error: expected unqualified-id before '%' token
 %include<cstdio>
 ^
0_0_20530842_22483.cpp: In function 'int main()':
0_0_20530842_22483.cpp:8:26: error: 'memset' was not declared in this scope
      memset(a,0,sizeof(a));
                          ^