View Compilation Error

0_0_21937544_15677.cpp: In function 'void CreatePrime()':
0_0_21937544_15677.cpp:44:13: error: 'p' was not declared in this scope
             p[pnum++]=i;  
             ^
0_0_21937544_15677.cpp:47:32: error: 'p' was not declared in this scope
         for(int j=0; j<pnum && p[j]*i<=N; j++){  
                                ^
0_0_21937544_15677.cpp: In function 'int main()':
0_0_21937544_15677.cpp:62:13: error: 'get_prime' was not declared in this scope
   get_prime();  
             ^
0_0_21937544_15677.cpp:66:15: error: 'falg' was not declared in this scope
    if(t%2==1&&falg[t]) cout<<++kase<<": yes"<<endl;
               ^