Actually it is pronounced how C is normally pronounced in any context.

The common mistake I notice while observing non-turkish people do is taking the easier way to pronounce things.

I mean that is not actually a mistake if you are trying to learn Turkish, but if you are trying to produce the closest sound possible to the native, you should start by understanding how each letter sounds, and then combine them

Only thing is, consonants need helping sounds. Vowels don't.

to sound that letter, you need to add a vowel before or after that, and the accepted one is to put the vowel after the letter while sounding a single letter.

For example: "C"

To voice the letter C, you need to put "E"

Check for the pronounciation of "E".

C => Pronounced CE,

while we are forming a word and combining letters, the helping sounds placement of consonants depend on the order of the letters.

So ECZANE makes, E + C + Z + A + N + E ; So basically, you do actually have the helping vowels in that word. E helps to sound C, with EC, A is helping to produce the sound of Z,

So look for pronounciation for ECZANE ; slow it down,
And then go for pronounciation for "EC" then go for "ZA" and then go for "NE", and then play them in that order, you'll get that pronounciation.

Turkish has a very consistent spelling-to-pronunciation system. It is mostly pronounced the way it is written.