The document contains 8 programs written in C++ to perform basic mathematical operations. Program 1 adds two numbers, Program 2 calculates the cube of a number, Program 3 finds the area of a rectangle, Program 4 finds the smaller of two numbers using an if/else statement, Program 5 multiplies two numbers, Program 6 calculates the difference of two numbers and displays the absolute value if negative, Program 7 determines if a number is even or odd, and Program 8 divides two numbers and displays the result. Each program displays sample input/output examples.

1. NCBA&E
(National College of Business Administration & Economics)
Assignment On Prog. & Problem Solving-1
Submitted by
Hamna Ali

2. BSCS-2143246
Submitted to
Miss Atifa Athar
Oct. 9. 2014
Program 1: (Sum)
#include<iostream.h>
Int main()
{
int n1,n2 , sum;
cout<<"Enter first number=";
cin>>n1;
cout<<"Enter second number=";
cin>>n2;
sum=n1+n2;
cout<<"The sum is="<<sum;

3. return 0;
}
Output:
n1=5,n2=3
sum=n1+n2
(5+3=8)
Program 2: (Cube)
#include<iostream.h>
int main()
{
int num, cube;

4. cout<<"Enter Any Number=";
cin>>num;
cube=num*num*num;
cout<<"The Cube is="<<cube;
return 0;
}
Output:
Enter any number:15
cube of 15 is:3375

5. Program 3: (find the Area of a Rectangle)
#include<iostream.h>
int main()
{
int ˥,w, area;
cout<<"Enter length=";
cin>>˥;
cout<<"Enter width=";
cin>>w;
area=˥*w;
cout<<"The Area="<<area;
return 0;
}
Output:
Enter length=8

6. Enter width=6
Area=l*w
so,
Area is =48
Program 4: (Find Smaller of Two numbers using If Else statement)
#include<iostream.h>
main()
{
int n1,n2, smaller;
cout<<"Enter First no=";
cin>>n1;
cout<<"Enter Second no=";
cin>>n2;
if (n1<n2)
{
smaller=n1;
}
else

7. {
smaller=n2;
}
cout<<smaller;
return 0;
}
Output: (prog 4)
Enter first number
15
Enter second number
5
5 is smallest number
Program: 5 (Find multiplication of two numbers)
#include<iostream.h>
int main ()

8. {
int a,b,c;
cout<<"Enter the value of a=";
cin>>a;
cout<<"Enter the value of b=";
cin>>b;
c=a*b;
cout<<"The product of a & b is="<<c;
return 0;
}
Output:
Enter the value of a: 2 Enter the value of b:4 Product of a&b is=8
Program: 6 (Find Difference of two numbers using condition)
#include<iostream.h>
main ()
{
int n1,n2, difference;

9. cout<<"Enter First no=";
cin>>n1;
cout>>"Enter Second no=";
cin<<n2;
difference=n1-n2;
if (difference<0)
{
difference=difference*(-1);
}
cout <<difference;
return 0;
}
Output:
Enter first number:5
Enter second number:2
Difference of two numbers is 3

10. Program : 7 (Program that inputs a number and finds whether
it is even or odd using if-else statement).
#include<iostream.h>
main()
{
int n;
cout<<"Enter a number:";
cin>>n;
if (n%2==0)
cout<<n<<" is even.";
else
cout<<n<<" is odd.";
getch();
}
Output:
Enter a number:10
10 is even number.

11. Program :8 (Find division of two numbers)
#include<iostream.h>
int main()
{
cout<<"Enter first no=";
cin>>n1;
cout<<"Enter second no=";
cin>>n2;
divide=n1/n2;
cout<<"The division="<<divide;
return 0;

12. }
Output:
Enter first number;4
Enter second number:8
Division of two number is 2.