View Compilation Error

0_0_23207393_12823.cpp:33:2: error: expected initializer before 'if'
  if(a==0)return -c/b;
  ^
0_0_23207393_12823.cpp:34:2: error: expected unqualified-id before 'return'
  return (-b+sqrt(b*b-4*a*c))/(2*a);
  ^
0_0_23207393_12823.cpp:35:1: error: expected declaration before '}' token
 }
 ^