1. Introduction to Algorithms and Programming
LAB 1
Introduction to Algorithms and Programming

2. C++ Program structure // My first program in C++
/*To Explain the C++ program structure
This is the Best Example Program*/
#include<iostream>
using namespace std;
int main( ) {
cout<<"This is the First Program \n";
cout<<"University of Nizwa";
return(0); }

3. Exercise 1:
Write a C++ program that read two numbers and find the addition and subtraction of them

4. #include<iostream> using namespace std; int main() {
/*this program read two numbers and find the addition and subtraction of them*/
#include<iostream>
using namespace std;
int main() {
int a,b,c,d;
cout<<"Enter the value for a"<<endl;
cin>>a;
cout<<"Enter the value for b"<<endl;
cin>>b;
c=a+b;
d=a-b;
cout<<"Result of addition"<<c<<endl;
cout<<"Result of subtraction"<<d<<endl;
return(0); }

5. Exercise 2:
Write a C++ program that read a number and find the square of that given number

6. //This program read a number and find the square of that given number
#include<iostream>
using namespace std;
int main() {
int number, result;
cout<<"Enter the value for number"<<endl;
cin>>number;
result =number*number;
cout<<"The result is"<< result <<endl;
return(0); }

7. Exercise 3:
Write a C++ program that swap between two numbers

8. //program to swap between two numbers
#include<iostream>
using namespace std;
int main() {
int num1,num2,temp;
cout<<"Enter the value for num1"<<endl;
cin>>num1;
cout<<"Enter the value for num2"<<endl;
cin>>num2;
temp=num1;
num1=num2;
num2=temp;
cout<<"Value of num1 after swapping"<<num1<<endl;
cout<<"Value of num2 after swapping"<<num2<<endl;
return(0);

9. Exercise 4: Write and algorithm to compare three numbers
and print the smallest number

10. //compare three numbers and print the smallest number
#include <iostream>
using namespace std;
int main() {
float n1, n2, n3;
cout<<"Enter the value for n1"<<endl;
cin>>n1;
cout<<"Enter the value for n2"<<endl;
cin>>n2;
cout<<"Enter the value for n3"<<endl;
cin>>n3;
if(n1 <= n2 && n1 <= n3)
cout << “Smallest number: " << n1; }
if(n2 <= n1 && n2 <= n3)
cout << " Smallest number: " << n2;
if(n3 <= n1 && n3 <= n2)
cout << " Smallest number: " << n3;
return 0;