C++ Logics

OBJECT :

          Write a program that asks the user to input the temperature of a particular city for a week. The program then finds and displays the average temperature. Use while loop.

CODING :

    

#include <iostream>

using namespace std;

int main()

{

int b=1,c,d=0,f;

while(b<=7)

{

cout<<"Enter temperature=";

cin>>c;

++b;

d=d+c;

}

cout<<"Average temperature of the week is="<<d/7<<"\n";

return 0;

}

OUTPUT:

OBJECT :

Write a program that reads five numbers (each between 1 and 30). For each number that is input, print a line containing that number of adjacent asterisk. For example if the input number is 7, the program should display *******.

CODING :

    

#include <iostream>

using namespace std;

int main()

{

       int a,i,j=1;

       while(j<=5)

       {

       cout<<"Enter asterisk length=";

       cin>>a;

       cout<<"\n";

       for(i=0;i<=a;i++)

       {

              cout<<"*";

       }

       ++j;

       cout<<"\n\n";

       }

       return 0;

}

OUTPUT:

OBJECT :

1.      Write a program segment (including a while loop) that reads one number into a variable named n and reads another number into a variable called maxPower. Then your statements should raise n to each power 0, 1, 2, ..., maxPower, and print a table like the following (suppose n is 2 and maxPower is 4):

n raised

n     power     to power

--------------------------

 2       0          1

 2       1          2

 2       2          4

 2       3          8

 2       4         16

CODING :

    

#include<iostream>

using namespace std;

int main()

{

int n,maxpow,b=1,c=1;

cout<<"Enter the number=";

cin>>n;

cout<<"Enter the maximum power=";

cin>>maxpow;

cout<<"n"<<"\tpower"<<"\tn rais to power\n";

for(int i=0;i<=30;i++)

       {

              cout<<"-";

       }

cout<<"\n";

cout<<n<<" \t 0"<<"\t\t1\n";

while(b<=maxpow)

{

cout<<n;

cout<<" \t "<<b;

c=c*n;

cout<<"\t\t"<<c<<endl;

++b;

}

return 0;

}

OUTPUT:

OBJECT :

   Write a program segment using nested loops to create the following output:

    *

   ***

  *****

 *******

*********

CODING :

#include<iostream>

#include<iomanip>

using namespace std;

int main()

{

 int s, c;

 for(s=25, c=1; c<=10; c+=2, s--)

 {

  cout<<setw(s);

  for(int i=1; i<=c; i++)

   cout<<"*";

  cout<<endl;

 }

 return 0;

}

    

OUTPUT:

OBJECT :

Write Write a C++ program that takes an integer value and decide if it is even or odd. Continue asking for numbers till the user enters a negative value. The program then displays the total number of even and odd integers given. Use While statement.

CODING :

    

#include <iostream>

using namespace std;

int main()

{

       int num=1,even=0,odd=0;

       while(num>=0)

       {

              cout<<"\n Enter the number is (negative to exist)=";

              cin>>num;

              if(num%2==0)

              {

                     cout<<"its an even number";

                     even++;

              }

              else

              {

                     cout<<"its an odd number";

                     odd++;

              }

       }

       cout<<"total even numbers are ="<<even<<"\n";

       cout<<"total odd numbers are="<<odd<<"\n";

       return 0;

}

OUTPUT:

Write a C++ program that asks user to input the number of rows and produces the following output using nested loop (if rows is equal to 4 output should be)

1

1 2

1 2 3

1 2 3 4

    

#include<iostream>

using namespace std;

int main()

{

int a,i,j,b=1;

cout<<"number of rows is=";

cin>>a;"\n";

for(i=1;i<=a;i++)

{

for(j=1;j<=b;j++)

{

cout<<j;

}

b++;

cout<<endl;

}

return 0;

}

Write a C++ program that inputs an integer larger than 1 and calculates the sum of squares from 1 to that integer. For example, if the integer equals 4, the sum of squares is 30 (1+4+9+16). The output should be the value of the integer and the sum, properly labeled. Continue the program till the user enters a negative value which signals the end of the program. Use a While statement.

#include <iostream>

using namespace std;

int main()

{

       float a,r;

       cout<<"enter number=";

       cin>>a;

           int square , sum=0;

       for(int i=1;i<=a;i++)

       {

       square=i*i;

       sum=sum+square;

       }

       cout<<"Sum of squares="<<sum<<"\n";

       return 0;

}