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2 years ago

Python

Computers and Technology

1 answer:

kramer2 years ago

3 0

The program illustrates the use of loops .

Loops are used for operations that must be repeated until a certain condition is met.

<h3>How to write the program?</h3>

The program written in Python, where comments are used to explain each action is as follows:

#This defines the int_to_reverse_binary function

def int_to_reverse_binary(integer_value):

#This initializes the string output

strNum = ""

#The following loop calculates the string output

while (integer_value > 0):

strNum += str(integer_value % 2)

integer_value //= 2

#This passes the string output to the string_reverse function

string_reverse(strNum)

#This defines the string_reverse function

def string_reverse(input_string):

#This reverses the string

strRev = input_string[::-1]

#This prints the reversed string

print("Binary number:",strRev)

# The main begins here

if __name__ == '__main__':

#This gets the decimal value

dec_val = int(input("Decimal value: "))

#This calls the int_to_reverse_binary function

int_to_reverse_binary(dec_val)

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Declaring a member as ____ in the base class provides access to that member in the derived classes but not to anyone else. a. pu

Sidana [21]

When a member is declared as b. <u>protected</u> in the base class, it provides access to that member in the derived classes but not to anyone else.

<h3>What is a derived class?</h3>

A derived class can be defined as a type of class that inherits the information or members of a base (parent) class such as a car in a syntax.

Basically, a public class is accessible to everybody while a private class can only be accessed by users within the declared class. Also, a constant is a class whose value remains unchanged.

In Computer programming, when a member is declared as <u>protected</u> in the base class, it ultimately provides access to that member only in the derived classes but not to other members or anyone else.

Read more on data types here: brainly.com/question/20264183

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6 0

2 years ago

10011÷11 binary division

Nostrana [21]

Answer:

110.01001

Explanation:

it's a repeating decimal

6 0

3 years ago

Write a C program that counts the number of vowels in a word. The C program reads words from an input file and then stores in an

polet [3.4K]

Answer:

Explanation:

The following code is written in C and does what the question requires. It uses the input file reads it and outputs the number of vowels to the file called output.dat

#include <ctype.h>

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

int str_count_in_chars(char *start, char *end, char *chars) {

int count = 0;

for (; start != end; count += !!strchr(chars, *(start++)));

return count;

}

void str_swap_in_chars(size_t str_len, char **str, char *chars) {

for (int front = 0, back = str_len - 1; front < back; front++) {

if (strchr(chars, (*str)[front])) {

for (; !strchr(chars, (*str)[back]); back--);

char tmp = (*str)[front];

(*str)[front] = (*str)[back];

(*str)[back--] = tmp;

}

char *file_to_str(FILE *fin) {

int buf_len = 64;

char buf[buf_len];

char *str = malloc(buf_len);

str[0] = '\0';

for (int i = 1; fgets(buf, buf_len, fin); i++) {

if (!(str = realloc(str, i * buf_len))) {

fprintf(stderr, "%s:%d realloc failed\n", __FILE__, __LINE__);

exit(1);

}

strcat(str, buf);

}

return str;

}

int main() {

char *vowels = "aeiou";

FILE *fin = fopen("input.dat", "r");

FILE *fout = fopen("output.dat", "w");

if (!fin || !fout) {

fprintf(stderr, "%s:%d fopen failed\n", __FILE__, __LINE__);

exit(1);

}

char *words = file_to_str(fin);

fclose(fin);

int words_len = strlen(words);

for (int i = 0; i < words_len;) {

if (isspace(words[i])) {

fputc(words[i++], fout);

continue;

}

int start = i;

for (; i < words_len && !isspace(words[i]); i++);

char *word = words + start;

int word_len = i - start;

int vowel_count = str_count_in_chars(word, words + i, vowels);

if (vowel_count % 2 == 0) {

str_swap_in_chars(word_len, &word, vowels);

}

fprintf(fout, "%.*s_%dvow", word_len, word, vowel_count);

}

fclose(fout);

free(words);

return 0;

}

5 0

3 years ago

What are the differences between tkinter toolkit and PyQt?

lesantik [10]

Answer:

See the explanation

Explanation:

tkinter toolkit

Easy to use
Easy to learn
Easy to debug
Good for simple tasks
TkInter applications are simpler as compared to PyQt because it is included in standard Python distribution.
Faster than PyQt.
Does not have advanced widgets.
No interface builder available.
Free for commercial utilization.

PyQt

More flexible in terms of coding.
Harder to debug as compared to tkinter
GUI is clearer in display than tkinter
Widgets are more interactive than that of tkinter
size of a PyQt program is larger than that of tkinter
uses a variety of paltform APIs and gives primary access to these APIs through a unique API.
Has an interface builder that allows to design interfaces without writing any code.
Has modern widgets.
Due to its vast interface and several UI components it is a bit confusing to learn as compared to tkinter.
Commercial license is required to release the code.
Cross-platform and native GUI.

Widgets are GUI components such as buttons, labels, menus.

a) Label

This is a tkinter widget to show the text or image on the screen. It looks like a display box. The user can easily edit or update label.

For example to display a label with text "Hello World" the following chunk of code is used:

import tkinter

widget = tkinter.Tk()

label =tkinter.Label(widget, text="Hello World")

label.pack()

tkinter.mainloop()

b) Entry

This is a tkinter widget to accept the text input from user. For example if you want to get a single line text from user then you can use Entry widget. The code below displays an entry widget with the message: Enter input text: Here the user can input the text.

import tkinter

widget = tkinter.Tk()

entry = tkinter.Entry(widget)

entry.insert(0, "Enter input text:")

entry.pack()

tkinter.mainloop()

c) Button

This is a tkinter widget to add a button in an application. You can enter some text or an image in this button convey its purpose. When you click on the button a function is called or an event is emitted.

The following chunk of code displays a button with the text "Click Me" on the button.

import tkinter

widget = tkinter.Tk()

button = tkinter.Button(widget, text="Click Me")

button.pack()

tkinter.mainloop()

d) Frame

This is a tkinter widget to group together and organize other widgets and arranges their position.

The following chunk of code displays an outer frame with a label with text "parent label" and an inner frame with a label of text "child frame".

import tkinter

widget = tkinter.Tk()

frame = tkinter.LabelFrame(widget,text="parent frame")

label= tkinter.Label(frame,text="child frame")

frame.pack(padx=10, pady=10)

label.pack()

tkinter.mainloop()

5 0

4 years ago

What should you do before you share your information on the internet?

satela [25.4K]

You have to think about, what could happen to you if you shared this information.

Hope this helped!

~Izzy

4 0

3 years ago