/* Program to enter two values and perform addition and multiplication operation*/
#include<iostream.h>
#include<conio.h>
main()
{
int n1,n2,sum,mul;
cout<<"\n Enter any two numbers";
cin>>n1>>n2;
sum=n1+n2;
mul=n1*n2;
cout<<"\n Sum of two numbers is "<<sum;
cout<<"\n Multiplication of two numbers is "<<mul;
getch();
}
/* Program to show addition and average of three (3) numbers*/
#include<iostream.h>
#include<conio.h>
main()
{
int n1,n2,n3,sum;
float av;
cout<<"\n Enter any three numbers";
cin>>n1>>n2>>n3;
sum=n1+n2+n3;
av=sum/3.0;
cout<<"\n Sum of three numbers is "<<sum;
cout<<"\n Average of three numbers is "<<av;
getch();
}
/* Program to enter length and breadth of rectangle and show its area*/
#include<iostream.h>
#include<conio.h>
main()
{
int l,b;
float ar;
cout<<"\n Enter value of length and breadth";
cin>>l>>b;
ar=l*b;
cout<<"\n Area is: "<<ar;
getch();
}
/* Program to enter base and height of the triangle and show its area*/
#include<iostream.h>
#include<conio.h>
main()
{
float b,h,ar;
cout<<"\n Enter height and base of triangle";
cin>>h>>b;
ar=0.5*h*b;
cout<<"\n Area of triangle is: "<<ar;
getch();
}
/* Program to enter Item name and its quantity and calculate the price*/
#include<iostream.h>
#include<conio.h>
main()
{
int itcd;
float pr,qty,tamt;
char itnm[10];
cout<<"\n Enter the item code and name";
cin>>itcd>>itnm;
cout<<"\n Enter item's quantity(in Kg) and price";
cin>>qty>>pr;
tamt=qty*pr;
cout<<"\n Code\tName\tQty.\tPrice\tT.Amount";
cout<<"\n "<<itcd<<"\t"<<itnm<<"\t"<<qty<<"\t"<<pr<<"\t"<<tamt;
getch();
}
PRECAUTIONS
1. Use accurate header files as sometimes we entered getch(); but we don’t apply is header i.e.#include<conio.h>.2. Never apply space in header files.
3. Never to apply ‘;’ after void main.
4. After declaring variables, cout and cin statements apply ‘;’ so as prevent program from syntax error.
5. Apply ‘;’ after getch().
6. Always close the brackets if you have started.
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