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Execution of the C Program:- Developing a program in a compiled language such as C requires at least four steps: 1. Editing (or writing) the program. 2. Compiling. 3. Linking. 4. Executing. Step 1: Editing : (in turbo C Compiler use the command TC filename.c at dos (prompt) 1. Write C program using Text Editor. Such as Notepad or Turbo C editor. 2. Save program with an extension .C (F2 in Turbo C) 3. File saved with .C extension is called as Source Program. Step 2: Compiling : (In turbo C compiler use Alt + F9 Key) 1. Source Program with an extension .C is given as input to Compiler. 2. Compiler checks for errors, if source code contains errors then goto step1 to modify the source program. 3. If source code is error free then Compiler Converts it into Object file with an extension obj and proceed to step3. Step 3: Linking : (This Process is inbuilt with step2 in Turbo Compiler). 1. Object Program with an extension .OBJ is given as input to Linker.