Programming &ProblemSolving
1
/*Write a program that input two number interchange the value of and then display them
without using third variable.*/
#include<iostream.h>
#include<conio.h>
void main()
{
clrscr();
int a,b;
cout<<"Entr 1st num : ";
cin>>a;
cout<<"Entr 2nd num : ";
cin>>b;
cout<<"Value Befor Swapping:"<<endl;
cout<<"1st num="<<a<<endl;
cout<<"2nd num="<<b<<endl;
a=a+b;
b=a-b;
a=a-b;
cout<<"Value After Swapping:"<<endl;
cout<<"1st num="<<a<<endl;
cout<<"2nd num="<<b<<endl;
getch();
}
Out Put

Programming &ProblemSolving
2
/*Take input of Three n.o if the are not Equal,then find the Smallest n.o*/
#include<iostream.h>
#include<conio.h>
void main(){
clrscr();
int a,b,c;
cout<<"Entr 1st n.o = ";
cin>>a;
cout<<"Entr 2nd n.o = ";
cin>>b;
cout<<"Entr 3rd n.o = ";
cin>>c;
if((a<b)&&(a<c))
cout<<"Smallest n.o is = "<<a;
else if((c<a) && (c<b)){
cout<<"Smallest n.o is = "<<c;}
else if((b<a) && (b<c)){
cout<<"Smallest n.o is = "<<b;}
else{
cout<<"All n.o are Equal";}

Programming &ProblemSolving
3
getch();
}
Out Put
/*Take input of two n.o if 1st n.o is greater than 2nd,display the division
as follow i.e. 1st=16 2nd=5 Ans=5*3+1=16*/
#include<iostream.h>
#include<conio.h>
void main()
{
clrscr();
int n1,n2;
cout<<"Entr 1st no. = ";
cin>>n1;
cout<<"Entr 2nd no. = " ;
cin>>n2;
if(n2>n1)
{
cout<<"invalide input";
}
else
cout<<n2<<" * "<<n1/n2<<" + "<<n1%n2<<" = "<<n1<<"n";
getch();

Programming &ProblemSolving
4
}
Out Put
/*Show out
*****
*****
***** */
#include<iostream.h>
#include<conio.h>
void main()
{
clrscr();
int i,j;
for(i=1;i<=3;i++)
{
for(j=1;j<=5;j++)
{
cout<<"*";
}
cout<<"n";
}
getch();
}

Programming &ProblemSolving
5
Out Put
/*Take input a n.o and find if it is divisible by 10 or not*/
#include<iostream.h>
#include<conio.h>
void main()
{
clrscr();
int a;
cout<<"Entr any number = ";
cin>>a;
if(a%10==0)
{
cout<<"it is Divisible by 10";
}
else
{
cout<<"it is not Divisible by 10";
}
getch();

Programming &ProblemSolving
6
}
Out Put
/*entr 10 student age and show average age*/
#include <iostream.h>
#include<conio.h>
void main()
{
clrscr();
float age1,age2,age3,age4,age5,age6,age7,age8,age9,age10;
float TotalAge;
float AverageAge;
cout <<" Please Enter The Age Of Student 1:" ;
cin >> age1;
cout <<" Please Enter The Age Of Student 2:" ;
cin >> age2;
cout <<" Please Enter The Age Of Student 3:" ;
cin >> age3;
cout <<" Please Enter The Age Of Student 4:" ;
cin >> age4;
cout <<" Please Enter The Age Of Student 5:" ;
cin >> age5;
cout <<" Please Enter The Age Of Student 6:" ;

Programming &ProblemSolving
7
cin >> age6;
cout <<" Please Enter The Age Of Student 7:" ;
cin >> age7;
cout <<" Please Enter The Age Of Student 8:" ;
cin >> age8;
cout <<" Please Enter The Age Of Student 9:" ;
cin >> age9;
cout <<" Please Enter The Age Of Student 10:" ;
cin >> age10;
TotalAge=age1+age2+age3+age4+age5+age6+age7+age8+age9+age10;
AverageAge=TotalAge/10 ;
cout << " Average Age Of Class Is : " << AverageAge ;
getch();
}
Out Put
/*Show 1st 8 FIBONACCI Number */
#include<iostream.h>
#include<conio.h>
void main()

Programming &ProblemSolving
8
{
clrscr();
long int a=21,b=0,c=1,sum;
while(b<a)
{
cout<<c<<" ";
sum=b+c;
b=c;
c=sum;
}
getch();
}
Out Put
/* Show out
*
**
***
**** */
#include<iostream.h>
#include<conio.h>
void main()

Programming &ProblemSolving
9
{
clrscr();
int i,j,sp;
for(i=1;i<=4;i++){
for(sp=1;sp<=4-i;sp++)
{
cout<<" ";
}
for(j=1;j<=i;j++)
{
cout<<"*";}
cout<<"n";
}
getch();
}
Out Put
/*Triangle */
#include<iostream.h>
#include<conio.h>

Programming &ProblemSolving
10
void main() //if(i==1&&i==4&&j==1&&j==x)
{
clrscr();
int i,j,sp,x=1;
for(i=1;i<=4;i++,x=x+2)
{
for(sp=1;sp<=4-i;sp++) cout<<" ";
for(j=1;j<=x;j++)
{
if(i>1&&i<4&&j>1&&j<x)
cout<<" ";
else
cout<<"*";
}
cout<<"n";
}
getch();
}
Out Put

Programming &ProblemSolving
11
/*SUM OF 1ST 6TH PRIME NUMBER*/
#include<iostream.h>
#include<conio.h>
void main()
{
clrscr();
int i,j,sum=0,flag=1,x;
for(i=1,x=0;x<=5;i++)
{
for(j=2;j<=i/2;j++)
{
if(i%j==0)
{
flag=0;
break;
}
}
if(flag)
{
x++;
sum+=i;
cout<<i<<" + ";
}

Programming &ProblemSolving
12
else
{
flag=1;
}
}
cout<<"bb = "<<sum;
getch();}
Out Put
/*Enter The Amount Of The Bill And Discount At The Rate Of 10% */
#include <iostream.h>
#include<conio.h>
void main ()
{
clrscr();
double amount,discount,netpayable;
cout << " Please Enter The Amount Of The Bill ";
cin >> amount;
if(amount>5000)
{
discount = amount*(15.0/100);
netpayable = amount-discount;
cout <<" The Discount At The Rate Of 15 % is Rupees " << discount << endl;

Programming &ProblemSolving
13
cout << " The Payable Amount is Rupees " << netpayable;
}
else
{
discount = amount*(10.0/100);
netpayable = amount-discount;
cout <<" The Discount At The Rate Of 10 % is Rupees " << discount << endl;
cout << " The Payable Amount is Rupees " << netpayable;
}
getch();
}
Out Put
/*Show out
****
***
**
* */
#include<iostream.h>
#include<conio.h>
void main()
{

Programming &ProblemSolving
14
clrscr();
int i,j;
for(i=1;i<=4;i++)
{
for(j=i;j<=4;j++)
{
cout<<"*";
}
cout<<"n";
}
getch();
}
Out Put
/*Write a program that generates the following output using a single nested loop
$
##
$$$
#### */
#include<iostream.h>
#include<conio.h>

Programming &ProblemSolving
15
void main()
{
clrscr();
int i,j;
for(i=1;i<=4;i++)
{
for(j=1;j<=i;j++)
if(i%2==0)
cout<<"#";
else
cout<<"$";
cout<<"n";
}
getch();
}
Out Put