Coding Assignment 5 – Solution

Ques . 1 Write a Program in C++ to swap two numbers using friend function

Sample Input and Output

Input : a = 5, b = 9

Output : a = 9, b = 5

Input : a = 4, b = 6

Output : a= 6, b = 4

#include<iostream>

using namespace std; 

class Swap { 
int num; 
public: 
Swap(int num) 
{ 
this->num = num; 
}
friend void swap(Swap&, Swap&); 
};

void swap(Swap& s1, Swap& s2) 
{ 
int temp;
cout << "\nBefore Swapping: " << s1.num << " " << s2.num;

temp = s1.num; 
s1.num = s2.num; 
s2.num = temp; 
cout << "\nAfter Swapping: " << s1.num << " " << s2.num; 
}

int main() 
{ 
Swap s1(6), s2(10); 
swap(s1,s2); 
return 0; 
}

Ques. 6 Write a C++ program to print the types of animal using run time polymorphism.

Sample Input and Output

Animal
Carnivorous Animals
Herbivorous Animals
Omnivorous Animals

Ques. 13 Write a C++ Program to Add Two Distances (in inch-feet) System Using Structures

Input and Output

Enter 1st distance,

Enter feet: 6

Enter inch: 3.4

Enter information for 2nd distance

Enter feet: 5

Enter inch: 10.2

Sum of distances = 12 feet  1.6 inches

#include <iostream>
using namespace std;

struct Distance{
int feet;
float inch;
}d1 , d2, sum;

int main()
{
cout << "Enter 1st distance," << endl;
cout << "Enter feet: ";
cin >> d1.feet;
cout << "Enter inch: ";
cin >> d1.inch;

cout << "\nEnter information for 2nd distance" << endl;
cout << "Enter feet: ";
cin >> d2.feet;
cout << "Enter inch: ";
cin >> d2.inch;

sum.feet = d1.feet+d2.feet;
sum.inch = d1.inch+d2.inch;

// changing to feet if inch is greater than 12
if(sum.inch > 12)
{
++ sum.feet;
sum.inch -= 12;
}

cout << endl << "Sum of distances = " << sum.feet << " feet " << sum.inch << " inches";
return 0;
}

Ques. 17 Write a C++ program to convert decimal number to binary number

Sample Input and Output

Enter a decimal number: 109

109 in decimal = 1101101 in binary

#include <iostream>
#include <math.h>
using namespace std;
//function to convert decimal to binary
long convert(int n)
{
    long binary = 0;
    int i = 1;
    //converting decimal to binary
    while (n!=0)
    {
        int rem = n%2;
        n /= 2;
        binary += rem*i;
        i *= 10;
    }
    return binary;
}
//main program
int main()
{
    int decimal;
    long binary;
    cout << "Enter a decimal number: ";
    //user input
    cin >> decimal;
    //calling function
    binary = convert(decimal);
    cout << decimal << " in decimal = " << binary << " in binary" << endl ;
    return 0;
}