C++ Practice A-3

Hi,


            How are you? I was busy with my some assignments for last week.So what about your home work?
Did you try the exercises that I given in the last post? I am giving the syntax of that exercise below.

1. Subtraction / multiplication / division with three numbers.(read &print) 

Subtraction

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#include<iostream.h>
#include<conio.h>
void main()
{
int a,b,sum;
clrscr();
cout<<"Enter First Number :";
cin>>a;
cout<<"Enter Second Number : ";
cin>>b;
sum=a-b;
cout<<"Sum :";
cout<<sum;
getch();
}
---------------

For multiplication and division you only need to change the line -   sum=a-b;   to-

sum=a*b;   &    sum=a/b; respectively.

      2. Write a program to input a radius and print the  Area Of a circle .

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


#include<iostream.h>
#include<conio.h>
void main()
{
int r; float p=3.14,area;
clrscr();

cout<<"Enter the radius :";
cin>>r;
area=p*r*r;
cout<<"Area of the circle :"<<area;
getch();
}
---------------

Formula-  3.14 * radius*radius. Here I declared two variable as float because they are carrying point.

   

     3. Write a program to input marks of  five subjects and print student name and his average.

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

#include<iostream.h>

#include<conio.h>

void main()

{

char name[20];

        int mark1,mark2,mark3,mark4,mark5,tot,ave;

clrscr();

cout<<"Enter name of the student:";

cin>>name;

cout<<"Mark 1 :";

cin>>mark1;

cout<<"Mark 2 :";

cin>>mark2;

cout<<"Mark 3 :";

cin>>mark3;

cout<<"Mark 4 :";

cin>>mark4;

cout<<"Mark 5 :";

cin>>mark5;

tot=mark1+mark2+mark3+mark4+mark5;

ave=tot/5;

cout<<"Student Name\tTotal Mark\tAverage Mark\n";

cout<<name<<"\t\t"<<tot<<"\t\t"<<ave;

getch();

}

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

Here I declared a variable(name) as char for adding student name. "char name" store only one letter, for storing more than one letter you have to declare the length. for example -    name[20]    - the variable can now store up to 20 letters.

Thanks,

Sidh.

Posted in: C ++