View Compilation Error

0_0_16210923_296.cpp: In function 'void make_prime()':
0_0_16210923_296.cpp:2:9: error: 'prime' was not declared in this scope
  memset(prime, 1, sizeof(prime));
         ^
0_0_16210923_296.cpp:2:32: error: 'memset' was not declared in this scope
  memset(prime, 1, sizeof(prime));
                                ^
0_0_16210923_296.cpp:8:3: error: 'primes' was not declared in this scope
   primes[++cnt ]=i;     
   ^
0_0_16210923_296.cpp:8:12: error: 'cnt' was not declared in this scope
   primes[++cnt ]=i;     
            ^