View Compilation Error

0_0_17907683_3014.cpp: In function 'int main()':
0_0_17907683_3014.cpp:90:35: error: 'memset' was not declared in this scope
         memset(cntC + 1, 0, sz * 4);
                                   ^
0_0_17907683_3014.cpp: At global scope:
0_0_17907683_3014.cpp:127:2: error: expected unqualified-id before '<' token
 }</span>
  ^