Q.Briefly explain how to write C program.

Writing a C program means keying the source code into an editor following C syntax rules, then compiling, linking and running it.

[!ANSWER]

Type the source in an editor with the correct structure (preprocessor directives, main(), declarations and statements ending in semicolons), save it with a .c extension, then compile, link and execute it, correcting any errors reported.

[!TLDR]

A C program is created by typing structured source code, saving it, and then compiling, linking and running it.

The steps to write and get a C program working are:

1. Plan the logic (optionally as an algorithm or flowchart).
2. Open a text editor and type the source code following C syntax - start with the #include directive, write the main() function, declare variables, and write the input, processing and output statements, each ending with a semicolon.
3. Save the file with a .c extension.
4. Compile the program; the compiler checks the syntax and reports errors, which must be corrected.
5. Link the compiled object code with library functions to produce an executable file.
6. Run (execute) the program and verify the output; if the result is wrong, correct the logic and repeat.

[!ANSWER]

Type the correctly structured source in an editor, save with a .c extension, then compile, link, run and debug it until the required output is obtained.