OOPS EXPT 1

#include<iostream.h>
#include<conio.h>
void swap(int *x,int *y)
{
*x=*x+*y;
*y=*x-*y;
*x=*x-*y;
}
int main()
{
clrscr();
int a,b;
cout<<"enter two nos"<<endl;
cin>>a>>b;
cout<<"the values before swapping a="<<a<<" b= "<<b<<endl;
swap(&a,&b);
cout<<"the values after swapping a="<<a<<" b= "<<b<<endl;
getch();
return 0;
}





#include<iostream.h>
#include<conio.h>
int main()
{
clrscr();
double p,t,r;
cout<<"enter the principal, term and rate for simple interest calc\n";
cin>>p>>t>>r;
cout<<"the simple interest is ="<<(p*t*r)/100<<endl;
getch();
return 0;
}








#include<iostream.h>
#include<conio.h>
int main()
{
float s1,s2,s3,s4,s5;
clrscr();
cout<<"Enter 5 subject marks\n" ;
cin>>s1>>s2>>s3>>s4>>s5;
cout<<"marks are \n";
cout<<"sub1\tsub2\tsub3\tsub4\tsub5\n";
cout<<s1<<"\t"<<s2<<"\t"<<s3<<"\t"<<s4<<"\t"<<s5<<"\n";
cout<<"the percentage is="<<(s1+s2+s3+s4+s5)/500<<endl;
getch();
return 0;
}

















#include<iostream.h>
#include<conio.h>
#include<string.h>


class student
{
float s1,s2,s3,s4,s5;
char name[100];
int rollno;

public:
float p;
 void get()
 {
  cout<<"\nEnter name and rollno\n";
  cin>>name>>rollno;
   cout<<"\nEnter 5 subject marks\n" ;
   cin>>s1>>s2>>s3>>s4>>s5;
   p=(float)((s1+s2+s3+s4+s5)/500*100);
 }
 void print()
 {
 cout<<name<<"\t"<<rollno<<"\t"<<s1<<"\t"<<s2<<"\t"<<s3<<"\t"<<s4<<"\t"<<s5<<"\t"<<p<<"\n";
 }

};

int main()
{
int n;
clrscr();

cout<<"Enter no of students ";
cin>>n;
student a[10],t;
cout<<"\n enter details\n";
for(int i=0;i<n;i++)
{
 a[i].get();
}
for(i=0;i<n;i++)
{
for(int j=0;j<n-i-1;j++)
{
if(a[j].p<a[j+1].p)
{
  t=a[j+1];
  a[j+1]=a[j];
  a[j]=t;
}

}
}





//clrscr();


cout<<"name\trollno\tsub1\tsub2\tsub3\tsub4\tsub5\tpercentage\n";
for(i=0;i<n;i++)
{
a[i].print();
}



getch();
return 0;
}