How do you pronounce the letters c and z in castilian spanish?

The letters c and z are pronounced differently in Castilian Spanish depending on the region. In most areas, they are pronounced as follows:

* C: The letter c is pronounced as a soft "th" sound, similar to the "th" in the English word "the." For example, the word casa is pronounced as "cah-sa."

* Z: The letter z is pronounced as a soft "s" sound, similar to the "s" in the English word "rose." For example, the word zapato is pronounced as "thah-pah-toh."

However, in some regions of Spain, the letters c and z are pronounced differently. For example, in some parts of Andalusia, the letter c is pronounced as a hard "k" sound, and the letter z is pronounced as a hard "s" sound.