Compiler design lab program in c language

Which lab C program was invented?
C, computer programming language developed in the early 1970s by American computer scientist Dennis M.
Ritchie at Bell Laboratories (formerly AT&T Bell Laboratories)..
Which lab has the C language?
C was created by Dennis Ritchie at Bell Labs in the early 1970s as an augmented version of Ken Thompson's B.
Another Bell Labs employee, Brian Kernighan, had written the first C tutorial, and he pers귭 Ritchie to coauthor a book on the language..
And C is an excellent choice for system programming, for example, developing operating systems, compilers, and network drivers.
History.
C was created by Dennis Ritchie at Bell Labs in the early 1970s as an augmented version of Ken Thompson's B.
Another Bell Labs employee, Brian Kernighan, had written the first C tutorial, and he pers귭 Ritchie to coauthor a book on the language.
Step 1: Open turbo C IDE(Integrated Development Environment), click on File, and then click on New.
Step 2: Write the C program code.
Step 3: Click on Compile or press Alt + F9 to compile the code.
Step 4: Click on Run or press Ctrl + F9 to run the code.
To learn problem solving techniques.
To teach the student to write programs in C and to solve the problems. use the pre-processor.
Write programs that perform operations using derived data types.

Which lab C program was invented?