needs 3 arguments

makes the rewind function unnecessary

is meant for checking whether a given file exists or not

both needs 3 arguments and makes the rewind function unnecessary

a mode

w mode

w+ mode

a+mode

f1,f2,f3

f3,f2,f1

The order may vary from compiler to compiler

None of these

Missing parentheses in return statement

Function should be define as int f(int a,int b)

Redeclaration of a

No error

Returns an integer

Returns a non-integer value

Is not defined in the same file

None of these