View Compilation Error

0_0_30567604_12786.cpp: In function 'void primes()':
0_0_30567604_12786.cpp:142:31: error: 'memset' was not declared in this scope
  memset(prime, 1, sizeof prime);
                               ^
0_0_30567604_12786.cpp: In function 'int* add(int*, int*)':
0_0_30567604_12786.cpp:160:28: error: 'memset' was not declared in this scope
  memset(ans, 0, sizeof(ans));
                            ^
0_0_30567604_12786.cpp: In function 'int main()':
0_0_30567604_12786.cpp:190:2: error: expected '(' at end of input
  while
  ^
0_0_30567604_12786.cpp:190:2: error: expected primary-expression at end of input
0_0_30567604_12786.cpp:190:2: error: expected ')' at end of input
0_0_30567604_12786.cpp:190:2: error: expected statement at end of input
0_0_30567604_12786.cpp:190:2: error: expected '}' at end of input