C Lessons

Source files, folders, file extensions, and how lesson materials are stored.

Create a small program with main, printf, and return 0.

Compile a .c file into an .exe file using Clang.

Run the compiled program and read its output in the command prompt.

Learn how to read simple compiler errors and fix one problem at a time.

Prove the full source file, Clang compile, EXE, and CMD output workflow from one simple task package.

Build the visible C program skeleton: include line, main, braces, statements, and return 0.

Learn that a C program is made from statements and that simple statements usually end with semicolons.

Use visible output as the first proof that the program ran correctly.

Print exact text labels with printf so both the user and the task checker can read them.

Use newline characters so output stays readable line by line.

Add simple comments that explain the code for humans.

Create simple integer variables and print their values.

Use %d correctly when printing integer values.

Change a variable after it was created and print the new result.

Work with several variables in the same small program.

Use readable names that explain what each value means.

Connect variables to real meanings like temperature and score.

Use int, char, and float in one small starter program.

Store and print one-character values with char.

Compare whole-number and decimal-number values.

Control how many digits are shown after the decimal point.

Inspect how many bytes common data types use.

Match real values to int, char, and float.

Use long and double in simple examples.

Convert a value from one type to another and print both results.

Protect important values so they are not changed accidentally.

See operators as symbols that act on values and variables.

Practice the basic math operators used in calculations.

Store and update values with assignment operators.

Compare values and print true-style result messages.

Combine conditions with &&, ||, and !.

See how brackets change the final result of an expression.

Use true and false style logic with integer results in C.

Run code only when one condition is true.

Choose between a true block and a false block.

Check more than one condition in order.

Use the ternary operator for a short condition result.

Select one branch from fixed integer cases.

Repeat code while a condition stays true.

Run the loop body once before checking the condition.

Use a counted loop with start, condition, and step.