double pow not working?

Code:

printf("Approximate cos(%d) = %lf", xdeg, 1-(double pow(radians, 2)/2) + (double pow(radians, 4)/24);

This is just a part of it, but everything seems to be right except for an error I get.

Code:

test.c:32: error: parse error before "pow"
test.c:32: error: parse error before ';' token

Anyone know if this is a very simple mistake or is something wrong with my whole program?

Double is the return type, you don't need it in the program. Just do pow(a, b).

You aren't supposed to specify a return value when you make a function call. C finds the correct function to use by name and parameter list.

PHP Code:

printf("Approximate cos(%d) = %lf", xdeg, 1- pow(radians, 2)/2 + pow(radians, 4)/24); 


That will run fine.

The exception here is when you want to typecast the return value, where you would have syntax issues:

PHP Code:

 printf("Approximate cos(%d) = %lf", xdeg, 1- (double) pow(radians, 2)/2 +  (double) pow(radians, 4)/24); 


This runs fine too, but you should only do this when the function the compiler will call will not return the necessary return type.

Your second error was due to a missing ')'.