EXECUTING A 'C' PROGRAM
Executing a program written in C involves a series of steps. These are:
- Creating the program:
- Compiling the program:
- Linking the program with functions that are needed from the C library; and
- Executing the program.
Fig. 10. illustrate the process of creating, compiling and executing a C program. Although these steps remain the same irrespective of the operating system, system commands for implementing the steps and conversion of naming files may differ on a different system.
An operating system is a program that controls the entire operation of a computer system. All input/output operation is channeled through the operating system. The operating system which is an interface between the hardware and the user handles the execution of user programs.
Fig. 10 Process of compiling & running a C program |
The two most popular operating system today is UNIX (for minicomputers) and MS-DOS (for microcomputers). We shall discuss briefly the procedure to be followed in executing a C program under both these operating system in the following sections in our next post. #allaboutprogramming62
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