#include<iostream.h>
#include<conio.h>
class test
{
public:
int bs, hra, pf, net;

getdata(int bs1, int hra1, int pf1)
{
bs=bs1;
hra=hra1;
pf=pf1;
net=bs+hra-pf;
return(net);
}

void display()
{
cout <<"Net Salary="<<net;
}
};

main()
{
clrscr();
test t;
t.getdata(10000,3000, 1500);
t.display();
}

2. C++ Program to add 2 numbers.

#include<iostream.h>
#include<conio.h>
void main()
{
int a,b;
clrscr();
cout<<"\nEnter two numbers:";
cin>>a>>b;
int sum=a+b;
cout<<"\nResult="<<sum;
getch();
}

3. C++ Program to display square and cube of entered number.

#include<iostream.h>
#include<math.h>
#include<conio.h>
main()
{
int num;
clrscr();
cout<<"\nEnter number:";
cin>>num;
cout<<"\nSquare of the given number="<<num*num;
cout<<"\nCube of the given number="<<num*num*num;
cout<<"\nSquare root of the given number="<<sqrt(num);
getch();
}

4. C++ Program to show inventory information.

#include<iostream.h>
#include<conio.h>
main()
{
int qty;
char itemnm[15];
float price,tot;
clrscr();
cout<<"\nEnter item name:";
cin>>itemnm;
cout<<"\nEnter qty:";
cin>>qty;
cout<<"\nEnter price:";
cin>>price;
tot=qty*price;
clrscr();
cout<<"\n=====BILL=====";
cout<<"\nItem name:"<<itemnm;
cout<<"\nQty      :"<<qty;
cout<<"\nPrice    :"<<price;
cout<<"\nTotal Amt:"<<tot;
cout<<"\n==============";
getch();
}

5. C++ program to display addition and multiplication using switch case.

#include<iostream.h>
#include<conio.h>
main()
{
int a,b,ch;
clrscr();
cout<<"\n1.Addition";
cout<<"\n2.Multilplication";
cout<<"\nEnter choice:";
cin>>ch;
switch(ch)
{
case 1:
cout<<"\nResult="<<a+b;
break;
case 2:
cout<<"\nResult="<<a-b;
break;
default:
cout<<"\nInvalid choice";
break;
}
getch();
}

6. C++ Program to use goto statement.

#include<iostream.h>
#include<conio.h>
main()
{
int i;
clrscr();
for(i=1;i<=10;i++)
{
if(i==5)
goto a;
cout<<"\nI="<<i;
}
a:
cout<<"\nProgram terminated";
getch();
}

7. C++ Program to display smallest and largest number.

#include<iostream.h>
#include<conio.h>
main()
{
int num[10];
int range;
clrscr();
cout<<"\nEnter range:";
cin>>range;
cout<<"\nEnter "<<range<<" numbers:";
for(int i=0;i<range;i++)
cin>>num[i];
cout<<"\nThe given numbers are:";
for(i=0;i<range;i++)
cout<<"\n"<<num[i];
int big,small;
big=num[0];
small=num[0];
for(i=1;i<range;i++)
{
if(num[i]>big)
big=num[i];
else if(num[i]<small)
small=num[i];
}
cout<<"\nLargest number="<<big;
cout<<"\nSmallest number="<<small;
getch();
}

8. C++ Program to swap 2 numbers using function.

#include<iostream.h>
#include<conio.h>
swap(int,int);

main()
{
int a,b;
clrscr();
cout<<"\nEnter two numbers:";
cin>>a>>b;

cout<<"\nBefore calling the function";
cout<<"\nA="<<a;
cout<<"\nB="<<b;

swap(a,b);
cout<<"\nAfter calling the function";
cout<<"\nA="<<a;
cout<<"\nB="<<b;
getch();
}

swap(int a,int b)
{
int temp=a;
a=b;
b=temp;
cout<<"\nInside the function";
cout<<"\nA="<<a;
cout<<"\nB="<<b;
}

9. C++ Program to find length of the string.

#include<iostream.h>
#include<conio.h>
#include<string.h>
main()
{
char str[25];
int i,len=0;
clrscr();
cout<<"\nEnter string:";
cin>>str;
for(i=0;str[i]!='\0';i++)
{
len++;
}
cout<<"\nLength of the string="<<len;
getch();
}

10. C++ Program to calculate electricity bill.

#include<iostream.h>
#include<conio.h>
class EBill
{
 int meterno,units,tot;
 char cnm[15];
 public:
 void getInfo()
 {
  cout<<"\nEnter customer name:";
  cin>>cnm;
  cout<<"\nEnter number of units used:";
  cin>>units;
  cout<<"\nEnter meter number:";
  cin>>meterno;
 }
 void calc()
{
 if(1<= units<=150)
 tot=units*2+100;
 else if(150< units<=300)
 tot=units*3+100;
 else if(300< units<=400)
 tot=units*4+100;
 else
 tot=units*5+100;
}
void showBill()
{
cout<<"\n=====Electricity BILL======";
cout<<"\nCustomer name="<<cnm;
cout<<"\nNo. of Units ="<<units;
cout<<"\nMeter number ="<<meterno;
cout<<"\nTotal Bill   ="<<tot;
cout<<"\n================";
}
};
main()
{
clrscr();
EBill ob;
ob.getInfo();
ob.calc();
ob.showBill();
getch();
}