The letter “C” is a consonant in the English alphabet and it is the third letter of the alphabet. The sound of the letter “c” can be pronounced as either a “hard c” (like a “k” sound) or a “soft c” (like an “s” sound) depending on the word it is used in. The letter “c” is used in many words in the English language and it is important for constructing words and sentences. In addition to English, the letter “c” is used in many other languages and writing systems around the world.