View Compilation Error

0_0_19991357_4014.cpp: In function 'int main()':
0_0_19991357_4014.cpp:27:10: error: expected unqualified-id before '=' token
  for(int =3;i<40;i++)
          ^
0_0_19991357_4014.cpp:27:10: error: expected ';' before '=' token
0_0_19991357_4014.cpp:27:10: error: expected primary-expression before '=' token
0_0_19991357_4014.cpp:27:13: error: 'i' was not declared in this scope
  for(int =3;i<40;i++)
             ^
0_0_19991357_4014.cpp:27:17: error: expected ')' before ';' token
  for(int =3;i<40;i++)
                 ^
0_0_19991357_4014.cpp:27:18: error: 'i' was not declared in this scope
  for(int =3;i<40;i++)
                  ^