Answer Posted / seamus barrett

An interface represents a contract between a class and its clients (the classes and functionality that consume the class). A class that implements an interface makes available to it's clients a collection of methods and properties as defined by the interface. As a class evolves (as the code changes) the contract between class and its client remains intact so long as the interface is unchanged. This allows a class to grow without requiring its clients to be rebuilt.

Difference? A class can be instantiated into an object that provides functionality to the instantiating function while an interface cannot be instantiated.

What is the difference between encapsulation and polymorphism?

603

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636

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586

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583

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630

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591

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607

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What is the use of oops?

627

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#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.

3263

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581

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601

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2165

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hi, this is raju,iam studying b.tech 2nd year,iam want know about group1 and group2 details, and we can studying without going to any instutions? please help me.

1549

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