View Compilation Error

0_0_30233578_4966.cpp: In function 'int main()':
0_0_30233578_4966.cpp:20:9: error: expected ';' before 'printf'
         printf("%d\n",phi(n));
         ^
0_0_30233578_4966.cpp: At global scope:
0_0_30233578_4966.cpp:23:5: error: expected unqualified-id before 'return'
     return 0;
     ^
0_0_30233578_4966.cpp:24:1: error: expected declaration before '}' token
 }
 ^