View Compilation Error

0_0_30528386_19223.cpp: In function 'int main()':
0_0_30528386_19223.cpp:14:28: error: 'createTable' was not declared in this scope
     int size = createTable();
                            ^
0_0_30528386_19223.cpp: In function 'int createTable()':
0_0_30528386_19223.cpp:39:37: error: 'memset' was not declared in this scope
     memset(isPrime,1,sizeof(isPrime));
                                     ^