Data_Structures_and_Stacks_Presentation.pptx

full module1 ppt of robo datastructures

1. Data Structures and Stacks Understanding the fundamentals of data structures, pointers, and stack operations in C.

2. Introduction to Data Structures Data structures organize and store data efficiently for easy access and modification.

3. Need for Data Structures To store large data efficiently, improve performance, and simplify complex operations.

4. Classification of Data Structures 1. Primitive: int, char, float 2. Non-Primitive: arrays, stacks, queues, lists.

5. Primitive Data Types Basic data types that store single values directly supported by C.

6. Non-Primitive Data Types Complex data types formed using primitive ones such as arrays, stacks, and queues.

7. Pointers in C Pointers store memory addresses and enable dynamic data access.

8. Pointer Example #include <stdio.h> int main(){int a=10;int *p=&a;printf("Value=%d",*p);return 0;}

9. Array of Pointers #include <stdio.h> int main(){int a=1,b=2,c=3;int *arr[3]={&a,&b,&c};for(int i=0;i<3;i++)printf("%d\n",*arr[i]);return 0;}

10. Structure and Pointers #include <stdio.h> struct Student{int id;char name[10];};int main(){struct Student s={1,"Raj"};struct Student *p=&s;printf("%d %s",p->id,p->name);return 0;}

11. Stack - Definition Stack is a linear data structure following LIFO (Last In, First Out) principle.

12. Stack using Arrays #include <stdio.h> #define SIZE 5 int stack[SIZE],top=-1; void push(int v){if(top<SIZE-1)stack[++top]=v;} void pop(){if(top>=0)top--;} int main(){push(10);pop();return 0;}

13. Stack using Structure struct Stack{int top;int arr[5];}; void push(struct Stack *s,int v){if(s->top<4)s->arr[++s->top]=v;}

14. Stack Operations Push - Insert element Pop - Remove element Peek - Display top element

15. Infix to Postfix Conversion Algorithm: 1. Scan infix from left to right 2. Push operators in stack 3. Output operands directly.

16. Postfix Evaluation Algorithm: 1. Scan expression 2. Push operands 3. Pop and evaluate operators.

17. Applications of Stack Used in recursion, undo operations, expression parsing, memory management.

18. Advantages and Limitations Advantages: Easy to implement, efficient for certain tasks Limitations: Fixed size in arrays.

19. Conclusion Stacks and pointers form the base of data handling and algorithm execution in C.