View Compilation Error

0_0_34837875_19467.c: In function 'f':
0_0_34837875_19467.c:6:4: error: expected expression before '/' token
    // else if(n==0)return 0;
    ^
0_0_34837875_19467.c:7:5: error: 'else' without a previous 'if'
     else  q[k]=6*p[k-1]+2;
     ^