Course/Module 4/Topic 1 of 3Intermediate

Control Flow & Decision Making - Concepts

Explore the key concepts of control flow & decision making with practical examples and exercises.

45 min•By Priygop Team•Last updated: Feb 2026

Introduction to Control Flow & Decision Making

In this section, we cover the fundamental aspects of control flow & decision making. You'll learn core concepts, see real-world examples, and understand how to apply them in your projects.

Key Concepts

Understanding the core principles of control flow & decision making
Practical applications and real-world use cases
Step-by-step implementation guides
Common patterns and best practices
Tips for debugging and troubleshooting
Performance optimization techniques

Control Flow & Decision Making - Code Example

Example

#include <stdio.h>

int main() {
    int score = 85;
    
    if (score >= 90) printf("Grade: A\n");
    else if (score >= 80) printf("Grade: B\n");
    else if (score >= 70) printf("Grade: C\n");
    else printf("Grade: F\n");

    // Switch
    int day = 3;
    switch (day) {
        case 1: printf("Monday\n"); break;
        case 2: printf("Tuesday\n"); break;
        case 3: printf("Wednesday\n"); break;
        default: printf("Other day\n");
    }

    // Ternary
    char *status = (score >= 60) ? "Pass" : "Fail";
    printf("Status: %s\n", status);
    return 0;
}

Try It Yourself: Control Flow & Decision Making

Try It Yourself: Control Flow & Decision MakingC

C Editor

✓ ValidTab = 2 spaces

#include <stdio.h>

int main() {
    int num;
    printf("Enter a number: ");
    scanf("%d", &num);
    
    if (num > 0) printf("Positive\n");
    else if (num < 0) printf("Negative\n");
    else printf("Zero\n");
    
    // Check even/odd
    printf("%d is %s\n", num, (num % 2 == 0) ? "even" : "odd");
    return 0;
}

Output

Click ▶ Run to see the result

Edit the code on the left, then click Run

C|15 lines|322 chars|✓ Valid syntax

UTF-8

Quick Quiz: Control Flow & Decision Making

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