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Elenna [48]
4 years ago
10

Write a C++ program that takes as input a list ( an array) of n integrers and finds the number of negative inetgers inthe list (

array ).
Side Note: The problem did not come out ofthis book but the information that I study is from this book. And Iam not getting how to write the program.
Computers and Technology
1 answer:
telo118 [61]4 years ago
6 0

Answer:Following is the program for the count of negative integers in an array:-

#include <bits/stdc++.h>  

using namespace std;

int main()

{

   int n,count=0;//declaring 2 variables n and count and initializing count with 0..

   cout<<"Enter the size of the array"<<endl;

   cin>>n;//prompting the size of the array...

   int negative_nums[n];//array of integers of size n..

   cout<<"Enter the numbers"<<endl;

   for(int i=0;i<n;i++)

   cin>>negative_nums[i];//prompting elements of the array...

   for(int i=0;i<n;i++)//iterating over the array....

   {

       if(negative_nums[i]<0)// if integer in the array at ith position is negative...  

       count++;// increasing the count...

   }

   cout<<"The number of negative numbers are "<<count<<endl;//printing the count of negative integers...

   return 0;

}

Explanation:

1. In the program i have taken a count integer initializing it with 0

2. Iterating over the array.

3. If the element at ith position is less than zero then increasing the count by 1.

4.Printing the count of negative integers in the array.

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Answer:

primes = []

for n in range(2,16):

   pn = n*n - 1

   if is_prime(pn):

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Write an if/else statement that compares the double variable pH with 7.0 and makes the following assignments to the int variable
levacccp [35]

Answer:

if (pH<7.0){

          neutral=0;

          base=0;

          acid=1;

      }

      else if (pH>7.0){

          neutral=0;

          base=1;

          acid=0;

      }

      else if (pH==7.0){

          neutral=1;

          base=0;

          acid=0;

      }

Explanation:

As required by the question, if and else statements have been used to test the value of the pH and assign the apropriate values to the variables neutral, base and acid.

The code snippet below can be used to prompt the user to enter values for pH

<em>import java.util.Scanner;</em>

<em>public class pHTest {</em>

<em>   public static void main(String[] args) {</em>

<em>      Scanner scr = new Scanner(System.in);</em>

<em>       System.out.println("Enter a value for the pH");</em>

<em>       int neutral, base, acid;</em>

<em>       double pH = scr.nextDouble();</em>

<em> if (pH<7.0){</em>

<em>           neutral=0;</em>

<em>           base=0;</em>

<em>           acid=1;</em>

<em>       }</em>

<em>       else if (pH>7.0){</em>

<em>           neutral=0;</em>

<em>           base=1;</em>

<em>           acid=0;</em>

<em>       }</em>

<em>       else if (pH==7.0){</em>

<em>           neutral=1;</em>

<em>           base=0;</em>

<em>           acid=0;</em>

<em>       }</em>

<em>} }</em>

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using namespace std;

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// variable

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cin>>temp;

int n;

// reduce the case for switch

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return 0;

}

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if less than 40, print "skiing".  

Output:

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