All categories

3 years ago

Nested if-else structures can contain many blocks of code. How many of those blocks of code might be executed?

Computers and Technology

1 answer:

dezoksy [38]3 years ago

7 0

Answer:

A nested if else structure is defined as using one if-else inside another one. It is used when you want a take a decision by checking several conditions. Nested if can contain many block of codes with each block executing if the certain condition is met for each of that block.

The number of blocks of code, that might be executed depends on the condition that is intended to be met, in order to take a certain decision based on that condition. Let suppose if the desired condition is met in the very first block of code then only one block of code is executed. For example consider the following code:

if(number<5)

{ if(number==1) {

cout<<"number is 1"<<number; }

else

{ cout<<"number is greater than 1"<<number; } }

else

{ cout<<"number is greater than 5";}

Suppose the number entered is 1. So the first nested if condition is true and number is 1 will be displayed. So none of the else blocks has to be executed.

Number of code blocks that might be executed also relies on the number of block present in the code.

The execution also depends on the number of blocks that are true or false. If you want to execute a block for true condition, nested if else looks through every block until the block with the true desired condition is reached but if you want false condition to be checked to display the block of code when condition gets false then it will look through all the blocks until it gets the block with that false part.

For example consider the following code:

if ( number > 0)

{ cout << "its a positive number: " << number; }

else if (number < 0)

{ cout<<"its a negative integer: " << number; }

else {

cout << "its a 0"; }

Suppose the number is 0 and the program has to sequentially checks for each condition. It will check number>0 which is not what we need, then it will check else if statement for number<0 which is again not desired and finally it will display the block "its a 0" which matches the desired condition.

You might be interested in

Write a program that prompts the user for the lengths of the two legs of a right triangle, and which reports the length of the h

timurjin [86]

Answer: The following code is in c++

#include <iostream>

#include<math.h>

using namespace std;

int main()

{

float a,b,c;

cout<<"Enter height and base of triangle\n";

cin>>a>>b; //reading two sides from user

c=sqrt(pow(a,2)+pow(b,2)); //calculating hypotenuse

cout<<"Length of hypotenuse is "<<c; //printing third side of triangle

return 0;

}

OUTPUT :

Enter height and base of triangle

Length of hypotenuse is 5

Explanation:

In the above code, three variables a, b and c of int type are declared. After that, it is asked from user to enter the value of a and b. The user puts the value and then c is calculated with the help of Pythagoras theorem formulae which squares the values of two sides and then adds them to calculate hypotenuse of a right angled triangle and finally c is printed to console.

3 0

3 years ago

Write a Python function called validateCreditCard that takes 8-digit credit card number as the input parameter (string value) an

babunello [35]

Answer:

def validateCreditCard(x):

if type(x)==str and len(x) == 8:

print("Valid credit card number")

else:

print("Invalid credit card number")

validateCreditCard("43589795")

Explanation:

Run the code on your text editor(vs code, sublime, pycharm ) you will get your desired response. If your input is not of type string and not up to 8 digit you will get the response "invalid credit card number" but if it is of type string and up to 8 digit you will get "Valid credit card number".

But remember python works with indentation so when you are transferring this code to your text editor it will run properly well.

I defined the code using the conventional pattern "def"

After defining the function you create a brackets (x) to accommodate your argument x and end it with a semi colon.

Then i use "if" statement to make sure only string argument and 8 digit value will be accepted to print a "valid credit card". if your argument does not pass the if statement condition it will print out the else statement condition which is "Invalid credit card number"

Finally, you have to call your function and test various values.

6 0

3 years ago

(Count positive and negative numbers and compute the average of numbers) Write a program that reads an unspecified number of int

Papessa [141]

Answer:

Explanation:

Sorry it is in Java, though you can covert it using converter

public class Exercise {

public static void main(String[] args) {

Scanner input = new Scanner(System.in);

int positives = 0; // Count the number of positive numbers

int negatives = 0; // Count the number of negative numbers

int count = 0; // Count all numbers

double total = 0; // Accumulate a totol

// Promopt the user to enter an integer or 0 to exit

System.out.print("Enter an integer, the input ends if it is 0: ");

int number = input.nextInt();

if (number == 0) { // Test for sentinel value

System.out.println("No numbers are entered except 0");

System.exit(1);

}

while (number != 0) {// Test for sentinel value

if (number > 0)

positives++; // Increase positives

else

negatives++; // Increase negatives

total += number; // Accumulate total

count++; // Increase the count

number = input.nextInt();

}

// Calculate the average

double average = total / count;

// Display results

System.out.println(

"The number of positive is " + positives +

"\nThe number of negatives is " + negatives +

"\nThe total is total " + total +

"\nThe average is " + average);

}

7 0

3 years ago

When data are entered into a form and saved, they are placed in the underlying database as knowledge?

luda_lava [24]

The answer would be and is true.

7 0

3 years ago

Whats my screen name?

adoni [48]

It could be any thing of your chose

8 0

3 years ago

Read 2 more answers