Gain insights into C programming with engaging puzzles. Explore formatting, type casting, string operations, and more. Enhance problem-solving skills and master effective coding practices.

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C, a foundational programming language, continues to be a vital tool for software development. Its efficiency, low-level control, and portability make it ideal for systems programming, embedded systems, and performance-critical applications. Mastering C opens doors to a wide range of career opportunities in the tech industry.

This course offers a unique opportunity to deepen your C programming skills through engaging puzzles and practical exercises. You will explore various topics, including formatting and printing, type casting, string operations, loops, buffer management, etc. Each puzzle is designed to challenge your understanding of C, uncover common pitfalls, and provide insights into effective coding practices.

After completing this course, you will enhance your problem-solving abilities and gain a thorough grasp of C programming intricacies. Whether a beginner or an experienced programmer, this course aims to refine your skills and deepen your appreciation for the C language.

C Brain Teasers: Exercise Your Mind

#include <stdio.h>

void modify(char *c)
{
  *(c+1) = 'o'; 
}
int main()
{
  char *string = "cat";
  printf("Before: %s\n", string);
  modify(string);
  printf("After: %s\n", string);
  return(0);
}

import React from 'react';
import { shallow, configure } from 'enzyme';
import Adapter from 'enzyme-adapter-react-16';

configure({ adapter: new Adapter() });

import HelloWorld from './app';

var TestResult = function() {
    this.succeeded = false;
    this.reason = "";
    this.input = "";
    this.expected_output = "";
    this.actual_output = "";
}

export const executeTests = function() {

  var results = [];

  result = new TestResult();
  result.input = 'HelloWorld Component';
  result.expected_output = "span containing text 'Hello World'"

  let wrapper = shallow(<HelloWorld />);

  // Call your Challenge function here.

  let type = wrapper.type();
  let testSuccessful = true;
  let failureReason;

  if (type !== 'span') {
    testSuccessful = false;
    failureReason = "You need to render exactly one span HTML element";
  } else if (wrapper.props().children != "Hello World") {
     testSuccessful = false;
     failureReason = "You have rendered wrong message in your span element";
  }

  result.actual_output = wrapper.html();

  if (testSuccessful) {
    result.succeeded = true;
    result.reason = "Succeeded"
  } else {
    result.succeeded = false;
    result.reason = failureReason;
  }

  results.push(result);

  return results;
}


React

Dart

GoJS React

Typescript React

Vue.js

Before: cat
Segmentation fault (core dumped)

Execute the code to understand the output and gain insights into pointer modification.

Before We Begin

Puzzles

Wrap Up

Appendix

Write a Shell in C

Discussion: Time to Pull Out Your Hair

Run the code

Understanding the output