if Statement
Understand the concept, syntax, example and common mistakes. Then write your own version.
C PROGRAMMING NOTES
C Control Structures
Learn decision making and repetition using if, else, switch, for, while and do-while.
TOPIC ROADMAP
What You Will Learn
if...else
Understand the concept, syntax, example and common mistakes. Then write your own version.
else if
Understand the concept, syntax, example and common mistakes. Then write your own version.
Nested if
Understand the concept, syntax, example and common mistakes. Then write your own version.
switch...case
Understand the concept, syntax, example and common mistakes. Then write your own version.
for Loop
Understand the concept, syntax, example and common mistakes. Then write your own version.
while Loop
Understand the concept, syntax, example and common mistakes. Then write your own version.
do...while Loop
Understand the concept, syntax, example and common mistakes. Then write your own version.
break and continue
Understand the concept, syntax, example and common mistakes. Then write your own version.
Study Notes
Start with the definition and purpose of the concept. Learn the basic syntax, identify the role of each part of a program, then compile a small example and experiment with different inputs.
Good programming habits
- Use meaningful variable and function names.
- Indent code consistently.
- Compile frequently so errors are easier to locate.
- Test normal, boundary and unexpected inputs.
- Write comments where they explain intent rather than obvious syntax.
Practice method
After reading this topic, close the notes and reproduce a small program from memory. Change one requirement, test the result and explain why the output changes.
RELATED LEARNING
Continue Learning
FAQ
How do I study this C programming topic?
Learn the definition and syntax, type a working example, test it, then solve a similar problem without copying.
Should I memorize C programs?
Focus on understanding the logic and common syntax patterns. You should be able to adapt a program to a new problem.