There are many operating systems developed in C, the most notable of which is Linux.
Unix was developed primarily using the C language; there may be a small amount of assembler/machine code used in the boot process as well.
Siebel was developed in C++ Siebel was developed in C++
Oracle is developed using C language...
Mac OS X is written in the programming languages C and Objective C.
C programming language
Because it's developed after the B language. the B language has been developed also in Bell Labs by Key Thompson. The C itself is improvement on the B language
Dennis Ritchie of bell laborateries had developed C language in 1973
No language, directly in assembly language.
C is a pop language. C is a case sensetive language. C is motherof all language. C is block structure language. C is a high level language. C is advace of B language. C developed by D.richties in 1972 at AT & T Bell lab in USA. Sachin Bhardwaj 986854722 skbmca@gmail.com
C was developed between 1969 and 1973 by Dennis Ritchie at Bell Labs.
Dennis Ritchie in 1972 in AT & T's Bell labs
An operating system is mostly developed in C. C++ is less common, but used by several OS developers. There also is some operatingsystems developed in Pascal and Ruby. The last (ruby) used an interpreter in C. To load the operating system, you need a bootloader. Which is at least partially written in assembler.