Error: Can't choose between alternatives for expression Cast of:
  Name: f

to:
  char 
Alternatives are:        Cost ( 1, 0, 0 ):         Cast of:
          Variable Expression: f: a signed int 

        to:
          char 
(types:
            char 
)
        Environment: 

        Cost ( 1, 0, 0 ):         Cast of:
          Variable Expression: f: a double 

        to:
          char 
(types:
            char 
)
        Environment: 


Error: Can't choose between alternatives for expression Cast of:
  Name: f

to:
  pointer to function
        accepting unspecified arguments
      returning 
        signed int 

Alternatives are:        Cost ( 1, 0, 0 ):         Cast of:
          Variable Expression: f: a function
                accepting unspecified arguments
              returning 
                nothing 


        to:
          pointer to function
                accepting unspecified arguments
              returning 
                signed int 

(types:
            pointer to function
                  accepting unspecified arguments
                returning 
                  signed int 

)
        Environment: 

        Cost ( 1, 0, 0 ):         Cast of:
          Variable Expression: f: a signed int 

        to:
          pointer to function
                accepting unspecified arguments
              returning 
                signed int 

(types:
            pointer to function
                  accepting unspecified arguments
                returning 
                  signed int 

)
        Environment: 

        Cost ( 1, 0, 0 ):         Cast of:
          Variable Expression: f: a double 

        to:
          pointer to function
                accepting unspecified arguments
              returning 
                signed int 

(types:
            pointer to function
                  accepting unspecified arguments
                returning 
                  signed int 

)
        Environment: