Question

Write a program that reads an integer k from user and
finds the number of elements that are divisible by k in the file
assignment4.txt. A number n is divisible by k if n = kx for some
integer x > 0. You can use the mod operator % to test for
divisibility. The file assign4.txt has integer values in the range
[0,100 ]. You should use end-of-file controlled loop for this
problem.
Sample execution is given below. Assume the data in the
assignment4.txt is
90
23
74
81
80
The output to be displayed on screen for the above file is
Enter k
10
2 numbers are divisible by 10

90
23
74
81
80
85
100
92
86
77
68
89

Answer 1

Program:

#include <iostream>

#include <fstream>

using namespace std;

int main()

{

int k,a,count=0; // variable declaration

cout<<"Enter the value of k: ";

cin>>k;

ifstream infile; // input file declaration

infile.open("assignment4.txt"); // Syntax for open the file

while (infile >> a) // read the file content

{

if(a%k==0)

count++;

}

infile.close(); // Atlast close the file

cout<<count<<" numbers are divisible by "<<k<<endl;

return 0;

}

Output:

clang version 7.0.0-3-ubuntu0.18.04.1 (tags/RELEASF 700/final) Enter the value of k: 10 3 numbers are divisible by 10

Answer 2

Write a program that asks to enter 2 lntegers of 4 digits and displays the different digits X and *if they are the same if the user enter a number which is not of four digits then a convenient is displayed For example if the user enters 1234 1432 Then the output should be : *X*X