2.How to find average of five subject??

#include <iostream>

using namespace std;

main ()

{

int math,eng,computer,urdu,ist,avg;

cout<<"enter the mark of math sub =";

cin>>math;

cout<<"enter the mark of eng sun =";

cin>>eng;

cout<<"enter the mark of computer =";

cin>>computer;

cout<<"enter the mark of urdu =";

cin>>urdu;

cout<<"enter mark of ist =";

cin>>ist;

avg =(math+eng+computer+urdu+ist)/5;

cout<<"avg is:"<<avg;

}

3.How to the volume of cylinder???

#include <iostream>

using namespace std;

main ()

{

float h,r,vol;

cout<<"enter the vlaue of h=";

cin>>h;

cout<<"enter the  vlaue of r =";

cin>>r;

vol=3.14*h*r*r;

cout<<"the of vol ="<<vol;

}

4.How to fine age to year,month,days??

#include <iostream>

using namespace std;

main ()

{

int age,month,year,day;

cout<<"enter the vlaue of age =";

cin>>age;

year=age;

month=year*12;

cout<<"enter the month ="<<month<<endle;

day=month*30;

cout<<"age in day ="<<day;

}

5.find the area of circle???

#include <iostream>

using namespace std;

main ()

{

float r,area;

cout<<"entre the vlaue of r =";

cin>>r;

area=3.14*r*r;

cout<<"The area of circle ="<<area;

}

6.convert salary in dollary??

# include <iostream>

using namespace std;

main()

{

int salary;

float dollar;

cout<<"Enter the salary =";

cin>>salary;

dollar = salary/105;

cout<<"salary in dollar ="<<dollar;

}

7.how to find mark of subject??

#include<iostream>

using namespace std;

main ();

{

cout<<"subjeci"<<"\mark\t"<<"\nenglish\t"<<78<<"\nmath\t"<<90;

}

Q.8 Write a program in which accept principle,rate and time from user and printe simple intrest.

#include<iostream>

using namespace std;

main()

{

int pi,r,t,i;

cout<<"enter the principle =";

cin>>pi;

cout<<"enter the rate =";

cin>>r;

cout<<"enter the time =";

cin>>t;

i=(pi*r*t)/100;

cout<<"simple intrest in : "<<i;

}

9.write a programe which accept character and display its ASCII values.

#include<iostream>

using namespace std;

main()

{

char ch;

cout<<"enter the  character :";

cin>>ch;

cout<<" ASCII is equilant to :"<<static_cast<int>(ch);

}

10.Write a program to swap the value of two programs??

#include<iostream>

using namespace std;

main ()

{

int a,b,temp;

cout<<"enter two values  :";

cin>>a>>b;

temp=a;

a=b;

b=temp;

cout<<"After swapping the number :";

cout<<a<<"  "<<b;

}

11.write a program to check whether the number positvie or negative(using ? :ternary operator).

#include<iostream>;

using namespace std:

main ()

{

int a;

cout<<"enter two non integer numbers :";

cin>>a;

(a)?cout<<"positive number":<<"negative number";

}

12.how to swapping the two values without use third varainle??

#include<iostream>

using namespace std;

main()

{

int a,b;

cout<<"enter the two values :";

cin>>a>>b;

a=a+b;

b=a-b;

a=a-b;

cout<<"After swapping the values :";

cout<<a<<" "<<b;
}

13.write a program which give three input and find the greatest number??

# include <iostream>

using namespace std;

main()

{

int a,b,c,greater;

cout<<"enter the three values :";

cin>>a>>b>>c;

greater=(a>b&&a>c)?a:(b>c)?b:c;

cout<<"the greatest vlaue is ="<<greater;

}

14.write a program which accept as integer and dispay total number of Notes 500,100,50,20,10,5 and 1.

# inlude <iostream>

using namespace std;

main()

{

  int amount,R500,R100,R50,R20,R10,R5,R1;

cout<<"enter the amount : ";

R5=amount/500;

amount=amount%500;

R100=amount/100;

amount=amount%100;

R50=amount/50;

amount=amount%50;

R20=amount/20;

amount=amount%20;

R10=amount/10;

amount=amount%10;

R5=amount/5;

amount=amount%5;

amount=R1;

cout<<"R500 : "<<R500<<"R100 : "<<R100<<"R50 : "<<R50<<"R20 : "<<R20<<"R10 : "<<R10<<"R5 : "<<R5<<" R1 : "<<R1;

}

15.Write a program to accept days in integer and display total number of year,month and day in it.

# include <iostream>

Using namespace std;

Main()

{

Int day,y,m,d;

Cout<<” Enter day :”;

Cin>>day;

Y=day/365;

day=day%365;

m=day/30;

days=day%30;

cout<<” Year : “<<y<<”Month :”<<m<<”Day :”<<d;

}

16. In a town the percentage of men is 52.The percentage of total literacy is 48.The percentage of literate men is 35 of the total population.

Write a program to find the total number of illiterate woman and men .If the population of the town is 80000.

# include <iostream>

Using namespace std;

Main()

{

Int population men, population women, literacy, literate men, literate woman, illiterate men, illiterate woman;

Population men= (80000*52)/100;

Cout<<”population of men in town = “<<population men;

Population woman=80000-population men;

Cout<<”population of women in town = “<<population woman;

Literacy= (80000*48)/100;

Cout<<”total literacy in town = “<<literacy;

Literate men= (80000*35)/100;

Cout<<”literate men in town =”<<literate men;

Illiterate men = population men – literate men;

Cout<<”illiterate man in town = “<<illiterate;

Literate women = literacy –literate men;

Cout<<”literate woman in town = “<<literate woman;

Illiterate woman = population woman –literate woman;

Cout<<”illiterate woman in town = “<<illiterate woman;

}

17.In five –digits number is input throught the keybord. Write a prpgram to reverses the numbers.

# include <iostream>

using namespace std;

main()

{

          int num,d4,d3,d2,d1;

          cout<<"enter the number = ";

          cin>>num;

          d4=num%10;

          num=num/10;

          d3=num%10;

          num=num/10;

          d2=num%10;

          num=num/10;

          cout<<d4<<d3<<d2<<num;

}

18.If a four digits input throught the keyboard . write a program to calculate the sum of its digits.

# include <iostream>

using namespace std;

main()

{

          int num,d4,d3,d2,d1,sum;

          cout<<"enter the number = ";

          cin>>num;

          d4=num%10;

          num=num/10;

          d3=num%10;

          num=num/10;

          d2=num%10;

          num=num/10;

          cout<<d4<<d3<<d2<<num;

          sum=num+d4+d3+d2;

          cout<<"\nsum = "<<sum;

}

18. if total selling price of 15 items and total profits earned on them is input through the keyboard ,write a program to find the cost price of on item.

#include<iostream>

using namespace std;

main()

{

    float cost, sale, costitem, profit;

    cout<<"Please enter total selling price of 15 items: ";

    cin>>sale;

  

    cout<<"\nNow enter total profit on 15 items: ";

    cin>>profit;

    cost = sale - profit;

    costitem = cost / 15;

    cout<<"\nCost price per item: "<<costitem;

}

1. Write a program to find the factorial value of any number entered through the keyboard


#include<iostream>
using namespace std;
int main()
{
int n,fact=1;
cout<<"Enter any number : ";
cin>>n;
while(n>=1)
{
fact*=n;
n--;
}
cout<<"Factorial :"<<fact;
}




2. Write a program to print out all Armstrong numbers between 1 and 500. If sum of cubes of each digit of the number is equal to the number itself, then the number is called an Armstrong number. For example, 153 = ( 1 * 1 * 1 ) + ( 5 * 5 * 5 ) + ( 3 * 3 * 3 )

   

    #include<iostream>
using namespace std;
int main()
{
int n,digit1,digit2,digit3;
for(int i=1;i<=500;i++)
{
digit1=i/100;
digit2=i/10 - digit1*10;
digit3=i%10;

if(digit1*digit1*digit1 + digit2*digit2*digit2 + digit3*digit3*digit3 == i)
cout<<i<<endl;
}
}




3. Write a program to print all prime numbers from 1 to 300.




int i,j,d=0;
cout<<"Display the prime number 1 to 300 "<<endl;
for(i=1;i<=300;i++)
{
for(j=2;j<=i/2;j++)
{
if(i%j==0)
{
d++;
break;
}}
if(d==0)
cout<<"\t \t"<<i<<"\n \n";
d=0;
}}





4. Write a program to print the multiplication table of the number entered by the user


#include <iostream>
using namespace std;
int main()
{
int n;
cout << "Enter a positive integer: ";
cin >> n;
for (int i = 1; i <= 10; ++i) {
cout << n << " * " << i << " = " << n * i << endl;
}
}




5. Write a program to generate Fibonacci number up to 500. Consider the following sequence of numbers: 1, 1, 2, 3, 5, 8, 13, 21, 34,....




# include <iostream>
using namespace std;
main()
{
int first=0,second=1,third;
for(int i=0;i<500;i++)
{
if(i<=1)
{
third=i;
}
else
{
third=first+second;
first=second;
second=third;
}
cout<<third<<" ";
}}



6. Write a program using loop to read five numbers and finds their sum and average.



#include <iostream>
using namespace std;
main()
{
int i,n,sum=0;
float avg;
cout<<"Input the 5 numbers : \n";
for (i=1;i<=5;i++)
{
cout<<"Number is :"<<i<<endl;

cin>>n;
sum =sum+n;

}
avg=sum/5;
cout<<"The sum of 5 no is   : "<<sum<<"\nThe Average is   : \n"<<avg<<endl;

}




7. Write a program to finds the sum of the first n positive integers


#include <iostream>
using namespace std;
main()
{
int n, count, sum = 0;
cout<<"Enter the value of n(positive integer: ";
cin>>n;
for(count=1; count <= n; count++)
{
sum = sum + count;
}
cout<<"Sum of first n natural numbers is: "<< sum;
}

8. Write a program to finds the sum as many positive integers as user want to enter. Use break and continue statement.


# include <iostream>
using namespace std;
int main()
{
    int i;
    double n, sum = 0.0;

    for(i=1; i <= 10; ++i)
    {
    cout<<"Enter number: ";
        cin>>n;

        // If user enters negative number, loop is terminated
        if(n < 0.0)
        {
            break;
        }

        sum += n; // sum = sum + number;
    }

cout<<"Sum = "<<sum;
    
    return 0;
}


9. Write program that Counts zeros, odds, and evens using loop. This program counts the number of odd and even numbers. The program also counts the number of zeros



#include<iostream>
using namespace std ;
main()
{
int odd=0;
int zero=0;
int even=0;
int i;
int num;
for(i=1;i<=5;i++)
{
cout<<"enter the number:"<<endl;
cin>>num;
if(num!=0  &&  num%2==0)
{
even++;
}
else if(zero==0)
{
zero++;
}
else
odd++;
}
cout<<"even number:"<<even <<endl;
cout<<"zero number:"<<zero <<endl;
cout<<"odd number:"<<odd <<endl;
}



10. Write a program to find ever or odd numbers up-to nth positive number


#include<iostream>
using namespace std ;
main()
{
int i,num;
for(i=num;i>0;i--)
{
cout<<"enter the number:";
cin>>num;
if(num>0 && num%2==0)
cout<<"number is even"<<endl;
else if(num>0 && num%2!=0)
cout<<"number is odd"<<endl;
else
break;

}



11. Write a program to take  10 digit number as input taken through the keyboard, write a program to obtain the sum of all number.


#include <iostream>
using namespace std;
 main()
{
    long num, temp, digit, sum = 0;

    cout<<"Enter the number ";
    cin>>num;
    temp = num;
    while (num > 0)
    {
        digit = num % 10;
        sum  = sum + digit;
        num /= 10;
    }
    cout<<"Given number = "<<temp;
    cout<<"\nSum of the digits = "<<sum;
}
13. Write a program to generate following patterns



#include<iostream>
using namespace std ;
main()
{
int i,j,s;
cout<<"This program was made by Muhammad Shoaib"<<endl;
for(i=1;i<=5;i++)
{
for(j=1;j<=i;j++)
{
cout<<"*";

}
cout<<endl;
}
cout<<"     PATTEREN  NO     2"<<endl;

    

for(i=1;i<=5;i++)
{

for(s=1;s<=i;s++)
{

cout<<" ";
        }
for(j=i;j<=5;j++)
{
cout<<"*";


}
cout<<endl;
    } 
    
    
     cout<<"PATTEREN     NO 3  "<<endl;
     
 
int L=10;

for(s=1;s<=5;s++)
{

        for(j=1;j<=L;j++)
{
cout<<s*j<<" ";


}
cout<<endl;
    }
}


}

switch statement in c++

Syntax

switch(expression) {
   case constant-expression  :
      statement(s);
      break; //optional
   case constant-expression  :
      statement(s);
      break; //optional
  
   // you can have any number of case statements.
   default : //Optional
      statement(s);
}

• The expression used in a switch statement must have an integral or enumerated type, or be of a class type in which the class has a single conversion function to an integral or enumerated type.
• You can have any number of case statements within a switch. Each case is followed by the value to be compared to and a colon.
• The constant-expression for a case must be the same data type as the variable in the switch, and it must be a constant or a literal.
• When the variable being switched on is equal to a case, the statements following that case will execute until a break statement is reached.
• When a break statement is reached, the switch terminates, and the flow of control jumps to the next line following the switch statement.
• Not every case needs to contain a break. If no break appears, the flow of control will fall through to subsequent cases until a break is reached.
• A switch statement can have an optional default case, which must appear at the end of the switch. The default case can be used for performing a task when none of the cases is true. No break is needed in the default case.

Flow Diagram

Example

#include <iostream>
using namespace std;
 
int main () {
   // local variable declaration:
   char grade = 'D';

   switch(grade) {
      case 'A' :
         cout << "Excellent!" << endl; 
         break;
      case 'B' :
      case 'C' :
         cout << "Well done" << endl;
         break;
      case 'D' :
         cout << "You passed" << endl;
         break;
      case 'F' :
         cout << "Better try again" << endl;
         break;
      default :
         cout << "Invalid grade" << endl;
   }
   cout << "Your grade is " << grade << endl;
 
   return 0;
}

You passed
Your grade is D