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Programming Fundamentals

Universidad Duke

4.7 (1,056 calificaciones) | 34K estudiantes inscritos

Curso 1 de 4 en Introduction to Programming in C Programa Especializado

Programming is an increasingly important skill, whether you aspire to a career in software development, or in other fields. This course is the first in the specialization Introduction to Programming in C, but its lessons extend to any language you might want to learn. This is because programming is fundamentally about figuring out how to solve a class of problems and writing the algorithm, a clear set of steps to solve any problem in its class. This course will introduce you to a powerful problem-solving process—the Seven Steps—which you can use to solve any programming problem. In this course, you will learn how to develop an algorithm, then progress to reading code and understanding how programming concepts relate to algorithms.

Destrezas que aprenderás

Algorithms, Programming Language Concepts, Problem Solving, C Programming

Revisiones

4.7 (1,056 calificaciones)

5 stars
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MM

Dec 27, 2017

Well worth it! Hated it in the beginning, couldn't wrap my head around the algorithms, but the course studies helped, kept reading, watching the videos, FINALLY got it!\n\n100% can recommend!

VV

Nov 11, 2018

Best Course I've taken on programming. Special thanks to the mentors, very clear and patient to explain each thing elaborately! Course is in great detail and made easy for Beginners. Thanks!

De la lección

Reading Code

In this module, you will learn to read code—this means you will be able to execute a piece of code by hand, and clearly illustrate what each statement does and what the state of the program is. Understanding how to read code is the only way to be sure you can write correct code. By the end of this module, you will be able to read and understand code with functions, conditional statements, iteration, and other fundamental techniques.

While Loops3:23

Equivalent For and While Loops2:17

Execution of Nested Loops3:35

Execution of Continue2:56

Impartido por:

Andrew D. Hilton
Associate Professor of the Practice
Genevieve M. Lipp
Assistant Professor of the Practice
Anne Bracy
Senior Lecturer

Transcripción

In this example, you're going to learn how to

execute code with a continue statement in it.

Here, we have a for loop that has a continue statement inside.

With a for loop, when you execute a continue statement,

the loop increment is performed with the continue.

To see this, let us first convert this for loop to the equivalent while loop.

Here, we've taken one step in the conversion process,

moving the variable declaration before the loop.

To move this closer to being a while loop,

we've moved the increment statement i++ to the end of the loop.

But notice that we also put i++ right before the continue statement.

Now, we've finished changing this for loop to an equivalent while loop.

Since i will go out of scope at the end of the function anyways,

we can get rid of the extra curly braces that we

wrote here without changing our code's behavior.

Now we are ready to begin executing.

We begin by calling our printRemainders function,

passing in negative two,

four and five as parameters.

We then declare i and initialize it to lo and reach our while loop.

i less than high is true,

so we enter the while loop.

i equals zero is false,

so we skip past the if statement and print five mod negative two is one.

We increment i and now have reached the end of the while loop.

So, we go back to the top of the loop.

i less than hi is true,

so we enter the loop body.

Again, i is not zero,

so we skip the if statement and print out five mod negative one is zero.

We increment i and then return to the top of the loop.

i less than hi is still true,

so we go inside the loop body.

However, now i is zero,

so we entered the then clause of this if statement.

We print that we cannot divide by zero.

Increment i and now reach the continue statement.

The continue statement just takes us to the start of the loop again,

right before we check the loop condition,

so we move the execution arrow back here.

Now we just do the next loop iteration as you would expect.

Since i is one not zero,

printing out a message and incrementing i.

We do the loop again with i being two,

printing out that five mod two is one,

and finally, one more time,

through the loop with i being three.

After this last iteration,

i less than hi is false,

so we skip the body of the while loop and return from printRemainders.

Now, we return from main, exiting the program.

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