## Problem 2.8 :: Write a program to read two floating point numbers using a scanf statement, assign their sum to an integer variable and then output the values of all the three variables.


## Solution ::


## Write down headers yourself.


void main()
{
float a,b;
int sum;
clrscr();
printf("Input float a & b:");
scanf("%f %f",&a,&b);
sum=a+b;
printf("\nThe summition is=%d",sum);
getch();
}

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##Problem 2.7 :: Write a program to do the following:

(a) Declare x and y as integer variables and z as a short integer variable.

(b) Assign two 6 digit numbers to x and y.

(c) Assign the sum of x and y to z.

(d) Output the values of x, y and z.



## solution ::

## Write down headers yourself.


void main()
{
long x,y;
short z;
clrscr();
printf("Input two 6 digit number to x and y:");
scanf("%d %d",&x,&y);
z=x+y;
printf("\nx=%d",x);
printf("\ny=%d",y);
printf("z=%d",z);
getch();

}

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## Problem 2.6 :: Write program to count and print the number of negative and positive numbers in a given set of numbers. Test your program with a suitable set of numbers. Use scanf to read the numbers. Reading should be terminated when the value 0 is encountered.


## Solution ::

## Write down headers yourself.

void main()
{
int a,b=0,c=0;
clrscr();
printf("\nInput positive & negative :");
printf("\nInput 0 to stop");
for(a=0;a<=1000;a++)
{
scanf("%d",&a);
if(a==0)
break;
if(a<0)
b++;
if(a>0)
c++;
}
printf("\nNegative item=%d",b);
printf("\nPositive item=%d",c);
getch();
}

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## Problem 2.5 :: The price of one kg rice is Rs. 16.75 and one kg sugar is Rs. 15. Write a program to get the value from the user and display the prices as follow:
***LIST OF ITEMS***
Item Price
Rice Rs. 16.75
Sugar Rs. 15.00


## Solutions ::

## Write down headers yourself.

void main()
{
float r,s;
clrscr();
printf("Enter the prices:");
scanf("%f %f",&r,&s);
printf("\n\n***LIST OF ITEMS***\n\n");
printf("Item Price\n\n");
printf("Rice Rs.%f",r);
printf("\n\nSugar Rs.%f",s);
getch();
}

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## Problem 2.4 :: Write a program that requests two float type numbers from the user and then divides the first number by the second and display the result along with the numbers.


## Solution ::

## Write down headers yourself.

void main()
{float a,b,x;
clrscr();
printf("Enter two number to divide: ");
scanf("%f %f",&a,&b);
x=a/b;
printf("\n\n%f/%f = %f\n",a,b,x);
getch();
}

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## Problem : 2.3 :: write a program that prints the even numbers from 1 to 100.


## Solution ::

## Write down headers yourself.

void main()
{
int a;
clrscr();
printf("EVEN NUMBER FROM 1-100:");
printf("\n");
for(a=1;a<=100;a++)
{
if(a%2==0)
printf("%d ",a);
}
getch();
}

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## Problem 2.2 :: Write a program to read the price of an item in decimal form (like 15.96) and print the output in paisa ( like 1596).


## Solution ::


##Write down headers yourself.

void main()
{float d;
long p;
clrscr();
printf("Enter your taka:");
scanf("%f",&d);
p=d*100;
printf("\n\n%f Taka = %ld Paisa",d,p);
getch();
}

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## Problem :: Write a program to determine and print the sum of the following harmonic series for a given value of n.



## Solution ::

##Write down headers yourself.

void main()
{
int a,b,n;
float s;
clrscr();
printf("Enter n=");
scanf("%d",&n);
printf(" 1");
for(a=2;a<=n;a++)
{
printf(" +");
printf("1/%d",a);
}
for(b=0;b<=n;b++)
{
s=1+ 1/(1+ (float) (b));

}

printf("= %f",s);

getch();

}

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### Question ::

                           Define a Class "student" with roll number, name and marks in 3 tests of a subject.Declare an array of 10 "student" objects.Using Appropriate Functions, Find the Average of Two Better Marks For Each Student. Print the Roll Number , Name and the Average marks of all the students.



###Solution ::




[ Write down headers yourself. ]




class student

{

public:

long roll;

char name[12];

float mark[3];

float in1,in2;

float average;

void getdata()


{
int i;

cout<<"\n\nEnter name:"; cin>>name;

cout<<"\n\nEnter Roll:"; cin>>roll;

cout<<"\n\nEnter Numbers of three subjects:" ; for(i=0;i<3;i++) { cin>>mark[i];

}

if(mark[0]>mark[1]||mark[0]>mark[2])

{ in1=mark[0];

if(mark[1]>mark[2])

in2=mark[1];

else

in2=mark[2];

}

else

{

if(mark[1]>mark[2])

{in1=mark[1]; in2=mark[2];}

else

{in1=mark[2]; in2=mark[1];}

}

average=float(in1+in2)/2;

}



void display()

{

cout<<"\n\nNAME :: "<

cout<<"\n\nROLL :: "<

cout<<"\n\nAVERAGE OF TWO BETTER MARKS :: "<

}

};

void main()

{ int i,j;

clrscr();

student s[10]; //You can change the number '10'. This is the number of students.
for(i=0;i<10;i++) //If you change student number you have to change '10' according
s[i].getdata(); //to the number of students in these two loops also.
for(j=0;j<10;j++)

s[j].display();

getch();

}

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Solution of Programming Exercise : 5.1 [ Object Oriented Programming With C++ -  By    " E. Balagurusamy"]

### Question ::
                           Define a class to represent a bank account.Including the Following Members : :

### Data Members ::

1.Name of the depositor.
2.Account number.
3.Type of account.
4.Balance amount in account.

###Member Functions : :

1.To assign initial values.
2.To deposite an amount.
2.To withdraw an amount after checking the balance.
4.To display Name and balance.


### Solution ::


Header files should be written yourself.
 
class bnac
{
char name[10];
char an[5];
int ba,ty;
public:
 void init(void);
 //void diposit();
 void withdraw(void);
 void display(void);
};



void bnac::init(void)
{
 int a,d,mid,x;
 char c[30];
 cout<<"Enter your name::";
 cin>>name;
 cout<<"\nEnter account number::";
 cin>>an;
 //an=x;
 cout<<"\nWhat type of acc.do you want to open?\n";
 p:
 cout<<"1.Standard(Min. diposite 500/=) \n\n2.Exclusive(Min. diposite 1000/=)\n\n";
 cin>>ty;
 if(ty!=1&&ty!=2)
   {cout<<"You have pressed wrong button.Please try again.\n";
   goto p;}
 n:
 cout<<"\nEnter amount::";
 cin>>d;
 if(ty==1&&d<500)
 {cout<<"\n\nPlease increase your amount";
 goto n;}
 if(ty==2&&d<1000)
  {cout<<"\n\nPlease increase your amount at minimum 1000";
  goto n;}

  else
  ba=d;
  }

void bnac::withdraw(void)
 {
  int x,y;
  l:
  cout<<"\n\nEnter your amount to withdraw::";
  cin>>x;
  if(ty==1)
    {if(x>(ba-500))
   {cout<<"\n\nplease enter smaller amount.\n";
   goto l;}
   else
    cout<<"\n\nyou can withdraw :: "<<<"Taka";
    }

  if(ty==2)
    {if(x>=(ba-1000))
    {cout<<"\n\nEnter smaller amount.\n";
    goto l;}
     else
      cout<<"\n\nYou can withdraw :: "<<<"Taka";
    }

  }





 void bnac::display()
 {
  cout<<"\n\nAccount number::"<
  cout<<"\n\nNAME\t\tBALANCE\n\n";
  cout<<<"\t\t"<
  }

    void main()
    {
     js:
     clrscr();
     int x;
     bnac ac;
     char i;
     cout<<"Initializing account\n\n";
      ac.init();
      cout<<"Choice your term::\n";
      cout<<"1.Withdraw an amount.\n\n2.Display info.";
      in:
      cin>>x;

    if(x==1)
    ac.withdraw();
    if(x==2)
    ac.display();
    if(x!=1&&x!=2)
    {cout<<"You pressed wrong key.Please try again.";
     goto in;}
      cout<<"\n\n\n\nDo you want to restrart the program?\n\nPress y for yes or another to quit(Check caps lock is off.)";
        cin>>i;
        if(i=='y')
        goto js;
     getch();

  }






### If any  problem please feedback.

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