Kuba imibono exhasa u-C isoloko igcinwe kufutshane kwi-design ye-compyutha, i-compiler (umakhi we-program) yiyo eyenza ezi-nstructions ze-khompyutha eyakusebenza ngokukhawuleza. Isizathu sokuba isebenze ngokukhawuleza kukuba yakha i-program kwikhowudi ye-matshini/ikhowudi yemveli. Oku kwenza i-C ibe lulwimi olulungileyo lokubhala i-operating systems. Ii-operating systems, ziquka i-Linux ne-UNIX, zi-programmed ezisebenzisa ulwimi. Ulwimi lona ngokwalo lunee-keywords ezimbalwa, kwaye izinto ezininzi zenziwa zenziwa ngokusebenzisa ii-libraries, eziyingqokolela yekhowudi zazo ukuze ziphinde zisetyenziswe.