Answer Posted / krithika

#include<iostream.h>
#include<conio.h>
class a
{
int area(int a)
{
cout<<"enter the side";
cin>>a;
return(a*a(;
}
float area(float l,float b)
{
cout<<"enter the length and breadth":
cin>>l>>b;
return(l*b);
}
};
int main()
{
clrscr();
a e;
int a;
float l,b;
cout<<"the area of a square"<<e.area(a);
cout<<"the area of a rectangle"<<e.area(l,b);
getch();
return 0;
}

#include #include #include #include void insert(struct btreenode **, int); void inorder(struct btreenode *); struct btreenode { struct btreenode *leftchild; struct btreenode *rightchild; int data; }; main() { struct btreenode *bt; bt=(struct btreenode *)NULL; int req,i=1,num; clrscr(); printf("Enter number of nodes"); scanf("%d",&req); while(i<=req) { printf("Enter element"); scanf("%d",&num); insert(&bt,num); i++; } inorder(bt); } void insert(struct btreenode **sr, int num) { if(*sr==NULL) { *sr=(struct btreenode *)malloc (sizeof(struct btreenode)); (*sr)->leftchild=(struct btreenode *)NULL; (*sr)->rightchild=(struct btreenode *)NULL; (*sr)->data=num; return; } else { if(num < (*sr)->data) insert(&(*sr)->leftchild,num); else insert(&(*sr)->rightchild,num); } return; } void inorder(struct btreenode *sr) { if(sr!=(struct btreenode *)NULL) { inorder(sr->leftchild); printf("\n %d",sr->data); inorder(sr->rightchild); } else return; } please Modify the given program and add two methods for post order and pre order traversals.

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