Rewrite the hangman game from chapter 4 using functions




















The input must be checking for few scenarios before implementing it in the game logic:. It is in the best interest of the game developer to check for a win each time a correct alphabet is entered. This is not a hard and fast rule, the reader can implement their own version of checking for the end game. For any queries or criticisms, feel free to comment below.

If you wish to learn more about developing terminal-based games in Python, you can check out other games like Minesweeper or Tic-tac-toe. Try again. Loop for creating the display word for char in word: if char. Try Again" continue Checking whether it is a alphabet if not inp[0].

Try Again" continue Checking if it already tried before if inp. Incorrect character input if inp. Correct character input else: Updating the word display for i in range len word : if word[i]. Collectives on Stack Overflow. Learn more. Asked 6 years, 6 months ago. Active 6 years, 6 months ago. Viewed times. Xarigizel Xarigizel 59 5 5 bronze badges. The first thing to do is to compile with warnings turned on e. Please take tilme to read a good C programming book. Add a comment.

Active Oldest Votes. Thanks for pointing out the mistakes i made with the pointers. I am still a bit confused now though. My plan was to have the array guessedLetters[] represent the letters that have been guessed correctly.

So for example, if the word is 'Apple' and the user guesses 'a', the guessedLetters aray would scan the word and change the [0] spot to a '1'. Which then displayWord will check to see if a '1' is in any of the guessed spaces, so it prints out A Sorry i am really new to C — Xarigizel. Xarigizel did you try out my code? For the second alternative the else -statement is used. An if -statement chooses between two alternatives. If its condition is true, the first statement is executed; otherwise, the second statement is, which is defined by the else statement.

The general form of an if -statement is. That is, an if , followed by an expression in parentheses, followed by a statement , followed by an else , followed by a statement.

It is also possible to combine two if -statements: For that use an if -statement as the else part of an if -statement:. In this way, we can write arbitrarily complex tests and associate a statement with each alternative. The corresponding while -statement would look like:. Using a for -statement yields more easily understood and more maintainable code whenever a loop can be defined as a for -statement with a simple initializer, condition, and increment operation.

A function is a named sequence of statements. A function can return a result also called a return value. However, we write many functions ourselves. Here is a plausible definition of square :. There are many other common ways of changing the value of a variable based on its current value. For example, we might like to add 7 to it, to subtract 9, or to multiply it by 2.

This provides a pleasantly compact notation that directly reflects our ideas. From one point of view, all that a program ever does is to compute; that is, it takes some inputs and produces some output. This view is accurate and reasonable as long as we take a broad view of what constitutes input and output.

The input can come from a keyboard, from a mouse, from a touch screen, from files, from other input devices, from other programs, from other parts of a program. The variety is essentially infinite. To deal with input, a program usually contains some data, sometimes referred to as its data structures or its state. Programming languages provide convenient ways of doing something several times.

This is called repetition or — especially when you do something to a series of elements of a data structure — iteration. These statements are ways to repeat some statement to loop. For this we need:. It is a value that points to a storage location, potentially allowing new values to be assigned so named because it appears on the left side of a variable assignment.

A member function is part of an object class or struct and must be called using this dot notation:. A vector initialized with no elements, v. Input comes from a wide variety of sources. Similarly, output can go to a wide variety of destinations. Output can be to a screen, to files, to network connections, to other output devices, to other programs, and to other parts of a program. Examples of output devices include network interfaces, music synthesizers, electric motors, light generators, heaters, etc.

Often, we start a vector empty and grow it to its desired size as we read or compute the data we want in it. We rarely do something only once. Therefore, programming languages provide convenient ways of doing something several times. In computer science, a value considered independently of its storage location.

The address of an rvalue may not be taken. To select based on a string you have to use an if -statement or a map Chapter A switch -statement generates optimized code for comparing against a set of constants. For larger sets of constants, this typically yields more efficient code than a collection of if -statements. However, this means that the case label values must be constants and distinct.

Often you want the same action for a set of values in a switch. It would be tedious to repeat the action so you can label a single action by a set of case labels. To store a collection of data and to work on it a vector can be used. It is a data structure that is simply a sequence of elements that you can access by an index. That is, the first element has index 0, the second index 1, and so on. The size can be obtained with its member function size. We could make such a vector like this:.

We see that to make a vector we need to specify the type of the elements and the initial set of elements. We can also define a vector of a given size without specifying the element values. If you have programmed before, you will note that a vector is similar to an array in C and other languages.

The language construct we used is called a while -statement. The loop body is a block delimited by curly braces that writes out a row of the table and increments the loop variable, i. If so, we are not yet finished and we can execute the loop body. If we have reached the end, that is, if i is , we leave the while -statement and execute what comes next.

In this program the end of the program is next, so we leave the program. The loop variable for a while -statement must be defined and initialized outside before the while -statement. Use the example above as a model for a program that converts yen, euros, and pounds into dollars.

If you like realism, you can find conversion rates on the web. Rewrite your currency converter program from the previous Try this to use a switch-statement. Add conversions from yuan and kroner. Which version of the program is easier to write, understand, and modify? This version of the currency converter program is easier to write and understand than the version using if statements. However, using switch-statement it is not possible to compare strings. Use a loop to write out a table of characters with their corresponding integer values:.

Rewrite the character value example from the previous Try this to use a for -statement. Then modify your program to also write out a table of the integer values for uppercase letters and digits. Hint: A median need not be an element of the sequence. The following to inputs are the same as for the previous program. Notice that the second input is different this time, because the median computation is changed.

Read a sequence of double values into a vector. Think of each value as the distance between two cities along a given route. Compute and print the total distance the sum of all distances. Find and print the smallest and greatest distance between two neighboring cities. Find and print the mean distance between two neighboring cities. Write a program to play a numbers guessing game. The user thinks of a number between 1 and and your program asks questions to figure out what the number is e.

Your program should be able to identify the number after asking no more than seven questions. Write a program that performs as a very simple calculator. Your calculator should be able to handle the four basic math operations — add, subtract, multiply, and divide — on two input values. Your program should prompt the user to enter three arguments: two double values and a character to represent an operation. If the entry arguments are In Chapter 6 we look at a much more sophisticated simple calculator.

Make a vector holding the ten string values "zero" , "one" , … "nine". Use that in a program that converts a digit to its corresponding spelled-out value; e. Have the same program, using the same input loop, convert spelled-out numbers into their digit form; e.

There is an old story that the emperor wanted to thank the inventor of the game of chess and asked the inventor to name his reward. The inventor asked for one grain of rice for the first square, 2 for the second, 4 for the third, and so on, doubling for each of the 64 squares. Write a program to calculate how many squares are required to give the inventor at least grains of rice, at least 1,, grains, and at least 1,,, grains.

Try to calculate the number of rice grains that the inventor asked for in exercise 8 above. Observe what happens when the number gets too large to represent exactly as an int and as a double. What is the largest number of squares for which you can calculate the exact number of grains using an int?

The overloaded function askNum returns a string type function the second one declared in this program and its corresponding prompt, because the variable it was assigned to is type string. Then, integer2 is printed back to the user. The function returns a string from the user input after the user is prompted to enter one. The difference between these to codes is fairly little as is their outcomes, but their logic comes from completely different places.

The first shows how specifying defaults can make a program cleaner looking, because when a function is called within the main function without an argument, it will return the default argument.

With overloaded functions, the same idea exists where arguments are not needed within the main function. However, this is achieved differently because each type of function has to be declared and defined separately. Write a program using vectors and iterators that allows a user to maintain a list of his or her favorite games.

The program should allow the user to list all game titles, add a game, and remove a game title. The vector file contains elements dealing with the container type vector, a dynamic array. The algorithm file was included for functions like find and end which are used on the vector container within this code.

I could have directed the user to input his favorite title with underscores instead of spaces, but I found myself not liking that approach. I found ways to use istream, a file which contains the functions getline and ignore. Vectors are dynamic arrays sequential lists that can be changed in size. These, specifically, contain strings instead of another type like an integer.

The second and third are different because they implement iterators. Iterators, unlike variables do not contain values. Instead, they point to the position of the value. The loop above asks the user to input his favorite game. It then employs the function getline to assign the entire line of text that is input by the user to the variable myGame. For example, if the user inputs Mario Bros , that will fill the first place in the vector list of strings. This loop displays the list for the user.

The iterator iter is initialized to point at the beginning of the vector myList found by with the algorithm function begin. The program will execute the loop upon meeting the condition that iter be smaller than the position found by the function end for myList, and the iterator is incremented after each pass. In this example, the printed list would be Mario Bros followed by Metal Gear Solid on the line after. It should be noted that the end function does not return the last position within the vector.

Instead, it returns the first space after the last vector position. So when the operation of printing the dereferenced interator within the loop occurs, it ends on the last vector position which is the last place that the loop can execute before reaching outside the vector and terminating.

If so, the program will prompt the user for a title on the list. Then it will assign the algorithm function find with parameters of myList found by functions begin and end , and myDelGame. The first and second parameters are always the lower and upper bounds of the search conducted by find.

The third parameter applies to what must be found. The while loop will continue as long as the user input string does not match a string on the vector myList.

For example, if the user inputs Zelda , the program will compare iter to Mario Bros , Metal Gear Solid and ultimately the string value in the first position after Metal Gear Solid , because it has not found Zelda within the vector.

If the user indeed incorrectly inputs a game title to be deleted, a prompt will be issued to enter a correct one and will restart the previous sequence. The loop will not be exited until the user inputs a title from his list, take for instance Mario Bros.

Once outside of the while loop, the erase function will erase that item and its space in the vector. For example, the vector will now only return Metal Gear Solid. The loop will start over if the user successfully deleted a game from his list.

In the example, the user types n , so the if statement condition is never met. That causes the loop to end, because there is no new iter initialization which has taken place. Finally, the program prints the list anew. In the example, the printed list is Metal Gear Solid.

The code above is for the most part my own of course there is no such thing as my own in coding, because almost everything is borrowed when breaking down the code to smaller pieces of itself. It surprised me how involved a code that appeared to be so simple could get.

And yet there is still so much I could have done: construct another loop to add games after the deletion process; convert string characters into capitals so that when comparing something like Zelda to zelDA, the program would read both expressions as the same; create a portion of program that could clear the list entirely.

The list of things that could have been done goes on, but the only things that refrain you or me from going as in depth as possible is our time constraints and our motivation to keep moving on. Improve the Word Jumble game by adding a scoring system. Make the point value for the word based on the length.

Deduct points if the player asks for a hint. The file string is included in this program. This file deals with groups of characters words or sentences. The type const signifies that the variable will not change from its assigned value. A random number is seeded and generated before being assigned to its variable choice. Because of the enumerations already declared, the following declarations use the enumerations to find the word to guess and the accompanying hint for the word.

Going back to the 2d string array, we see that the first column by default is 0, not 1 of the third row again by default, 2 is labored. A variable for the bonus score will be initialized as the size of the word multiplied by With labored , since there are 7 letters, that bonus will be points. Another variable, baseBonus , was created preserve that value. To accomplish this, sizeBonus was copied into it. Like with the string variable jumble , the values within sizeBonus are going to be manipulated.

After declarations are made, a for loop is passed in order to jumble the letters of the chosen word. An integer i is initialized at the number zero. Under the condition that i is less than the length , the loop will operate. In this example, length is equal to 7 because labored has 7 letters.



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