C Programming Tutor Nairobi | Clinton Luswa

About Me

Hi, I'm Clinton Wafula Luswa

I'm an ICT tutor who teaches C programming to Diploma and Certificate ICT students. I hold a Diploma in ICT from Eldoret National Polytechnic and I am training in pedagogy at KSTVET (2026). I have 3 years of experience teaching in a cyber, where I help students go from their first line of code to writing programs on their own.

My method is simple: Learn by Building. You don't just read about loops, you use them in a real program. In 8 weeks we go from Hello World to a working mini project you can show to lecturers and employers.

Diploma in ICT – Eldoret National Polytechnic
Pedagogy training – KSTVET (2026)
3 years teaching in a cyber
Based in Nairobi, originally from Eldoret

Talk to Me

For Colleges & Employers

ICT Trainer Profile

Looking for a C programming trainer for your Diploma or Certificate ICT department? Here is what I bring to the classroom.

The 8-Week Course

What You Will Learn

One topic a week, always ending with something you build yourself. Tap a week to open the free notes.

Week 1

Install Compiler

Set up a C compiler on your computer and run your first Hello World program.

Watch the video → Week 2

Variables

Variables, data types, input and output, and operators.

Open notes → Week 3

If / Else

Make your programs take decisions with if, else and switch.

Open notes → Week 4

Loops

Repeat work with for, while and do-while loops.

Open notes → Week 5

Functions

Break big programs into reusable parts with parameters and return values.

Open notes → Week 6

Arrays & Strings

Store lists of values and work with text in C.

Open notes → Week 7

Pointers & Files

Understand memory addresses and save data to files.

Open notes → Week 8

Mini Project

Put everything together in a finished project for your portfolio.

See projects →

Why Learn With Me

Built for Kenyan ICT Students

Practical

Every lesson is hands-on. You type the code, run it, break it and fix it.

KNEC Exam Focus

Notes, practical questions and viva questions made for Diploma and Certificate ICT students.

Portfolio Project

You finish with the mini project, something real to show lecturers and employers.

Small Classes

Small groups mean every student gets attention and questions get answered.

Student Notes

Free C Programming Notes

KNEC-friendly C programming notes, one page per topic. Read on your phone, practise in the online compiler.

01

C Programming Basics

Variables, data types, input/output, operators, comments and program structure.

02

Control Structures

Decision making and repetition with if, else, switch, for, while and do-while.

03

Arrays

One-dimensional and two-dimensional arrays, searching and sorting.

04

Strings

Character arrays, string input, string length and common string functions.

05

Functions

Reusable functions, parameters, return values, scope and recursion.

06

Pointers

Memory addresses, dereferencing, pointers with arrays and functions.

07

Structures & Unions

Custom record types for student, payroll, library and other data.

08

File Handling

Read and write persistent data using C file streams.

▶

Online C Compiler

Write, compile and run C programs in your browser, no install needed.

Start the Full C Tutorial

Practice Programs

C Programming Examples

Start with small programs and progress to arrays, strings and structures. Copy, run, then change them.

Try:

Beginner01

Hello World

Concept: A simple introduction to program structure and printf().

Viva: Why is stdio.h included?

#include <stdio.h>

int main(void) {
    printf("Hello World");
    return 0;
}

Beginner02

Add Two Numbers

Concept: Variables, input and arithmetic.

Practice: Modify it to calculate average.

#include <stdio.h>

int main(void) {
    int a, b;
    printf("Enter two numbers: ");
    scanf("%d %d", &a, &b);
    printf("Sum = %d", a + b);
    return 0;
}

Beginner03

Even or Odd

Logic: n % 2 == 0 identifies an even integer.

Topic: Selection control structure.

#include <stdio.h>

int main(void) {
    int n;
    scanf("%d", &n);
    if (n % 2 == 0) printf("Even");
    else printf("Odd");
    return 0;
}

Beginner04

Positive, Negative or Zero

Concept: Multiple conditions using if...else if...else.

#include <stdio.h>

int main(void) {
    int n;
    scanf("%d", &n);
    if (n > 0) printf("Positive");
    else if (n < 0) printf("Negative");
    else printf("Zero");
    return 0;
}

Intermediate05

Check Prime Number

Logic: Test possible divisors and track whether any divides the number.

Practice: Rewrite it using a function.

#include <stdio.h>

int main(void) {
    int n, prime = 1;
    scanf("%d", &n);
    if (n < 2) prime = 0;
    for (int i = 2; i * i <= n; i++)
        if (n % i == 0) { prime = 0; break; }
    printf(prime ? "Prime" : "Not prime");
    return 0;
}

Intermediate06

Factorial of a Number

Concept: Repetition and accumulation.

#include <stdio.h>

int main(void) {
    int n;
    unsigned long long f = 1;
    scanf("%d", &n);
    for (int i = 1; i <= n; i++) f *= i;
    printf("%llu", f);
    return 0;
}

Intermediate07

Largest Element in an Array

Concept: Traverse an array and keep the current maximum.

#include <stdio.h>

int main(void) {
    int a[5], max;
    for (int i = 0; i < 5; i++) scanf("%d", &a[i]);
    max = a[0];
    for (int i = 1; i < 5; i++)
        if (a[i] > max) max = a[i];
    printf("Largest = %d", max);
    return 0;
}

Intermediate08

Find String Length

Concept: Character arrays and the standard strlen() function.

Safety: Use bounded input such as fgets() for lines.

#include <stdio.h>
#include <string.h>

int main(void) {
    char s[100];
    fgets(s, sizeof s, stdin);
    printf("Length = %zu", strlen(s));
    return 0;
}

Intermediate09

Area Using a Function

Concept: A function can accept a parameter and return a calculated value.

#include <stdio.h>

float area(float r) {
    return 3.14159f * r * r;
}

int main(void) {
    float r;
    scanf("%f", &r);
    printf("%.2f", area(r));
    return 0;
}

Advanced10

Student Record Using Structure

Concept: A structure groups related fields under one type.

#include <stdio.h>

struct Student {
    char name[50];
    int age;
    float marks;
};

int main(void) {
    struct Student s = {"Alex", 20, 78.5f};
    printf("%s %d %.1f", s.name, s.age, s.marks);
    return 0;
}

KNEC Revision

Prepare for Your C Programming Exam

Revise the way you will be tested: write the program, then explain it.

Practical Questions

Programming questions to solve on the computer, from simple input/output to arrays, functions and files.

Practise Now

Viva Questions

Questions examiners ask when they want you to explain your code and your logic.

Revise Viva Questions

Project Ideas

Student management, library, ATM and payroll systems to practise a full program.

See Projects

YouTube · C Programming with Clinton Luswa

Watch the Lessons

Follow along step by step. New lessons are added as the course grows.

How to Install C Compiler on Windows 30 minutes · Lesson 1

Lesson 1: How to Install C Compiler on Windows (30 Mins)

Everything you need to set up your computer for C programming (Week 1).

Watch on YouTube

Classes

Ways to Learn With Me

Choose the format that fits you. Message me on WhatsApp and I'll send the details.

Weekend Classes

For students who want structure alongside college or work.

Contact for Price

Follows the 8-week course
Small groups
Hands-on practice

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College Training

For colleges and TVET institutions that need a C programming trainer.

Contact for Price

Nairobi & Eldoret
Diploma & Certificate ICT levels
KNEC / TVET focus

Ask on WhatsApp

One-on-One

Personal lessons at your own pace, ideal for catching up or exam revision.

Contact for Price

Lessons shaped around your level
Exam and practical revision
Direct help with your questions

Ask on WhatsApp

FAQ

Questions About Learning C Programming

Is C programming good for beginners?

Yes. C gives beginners practice with variables, expressions, control flow, functions, arrays and memory concepts. Start with small programs and increase difficulty gradually.

How should I practice C programming?

Read a concept, type an example yourself, compile it, test different inputs, explain the logic aloud and solve a related problem without copying.

What should I learn after C basics?

Move to control structures, arrays and strings, then functions, pointers, structures and file handling. Projects help connect the topics.

Can I learn C on a phone?

You can begin with a browser-based compiler or mobile coding environment, but a computer becomes more convenient for larger multi-file projects.

Where can I find C practical and viva questions?

Use the C practical questions and C viva questions pages on this site.

Contact / Hire Me

Hiring an ICT Trainer? Let's Talk

I am open to ICT trainer and C programming tutor positions in Nairobi and Eldoret. Colleges, TVET institutions, students and parents are all welcome to message me and I will reply as soon as I can.

WhatsApp: 0748 032 315Fastest way to reach me
clintonluswa@gmail.comFor colleges and formal enquiries
Nairobi, KenyaAlso serving Eldoret

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Learn C Programming From Zero to Mini Project in 8 Weeks

Hi, I'm Clinton Wafula Luswa

ICT Trainer Profile

At a glance

How I teach: Learn by Building

What your institution gets

What You Will Learn

Install Compiler

Variables

If / Else

Loops

Functions

Arrays & Strings

Pointers & Files

Mini Project

Built for Kenyan ICT Students

Practical

KNEC Exam Focus

Portfolio Project

Small Classes

Free C Programming Notes

C Programming Basics

Control Structures

Arrays

Strings

Functions

Pointers

Structures & Unions

File Handling

Online C Compiler

C Programming Examples

No programs found

Hello World

Add Two Numbers

Even or Odd

Positive, Negative or Zero

Check Prime Number

Factorial of a Number

Largest Element in an Array

Find String Length

Area Using a Function

Student Record Using Structure

Prepare for Your C Programming Exam

Practical Questions

Viva Questions

Project Ideas

Watch the Lessons

Lesson 1: How to Install C Compiler on Windows (30 Mins)

Variables & Data Types

If / Else Decisions

Loops: for, while, do-while

Ways to Learn With Me

Weekend Classes

College Training

One-on-One

Questions About Learning C Programming

Hiring an ICT Trainer? Let's Talk

Send Me a Message