C function that counts lines in file

Question

When I try to run my program, I get the wrong number of lines printed.

LINES: 0

This is the output although I have five lines in my .txt fi

Answer 1

You declare

int countlines(char *filename)

to take a char * argument.

You call it like this

countlines(fp)

passing in a FILE *.

That is why you get that compile error.

You probably should change that second line to

countlines("Test.txt")

since you open the file in countlines

Your current code is attempting to open the file in two different places.