View Compilation Error

0_0_13810937_23625.cpp: In function 'int main()':
0_0_13810937_23625.cpp:14:23: error: 'memset' was not declared in this scope
   memset(b,0,sizeof(b));
                       ^
0_0_13810937_23625.cpp: At global scope:
0_0_13810937_23625.cpp:38:2: error: expected unqualified-id before '<' token
 }</span>
  ^