3.2 Implementation of Stack using Array | Data Structure and Algorithm Tutorials 

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Implementation in C: #include #define N 5 int stack[N]; int top=-1; void push() { int x; printf("Enter data:"); scanf("%d",&x); if(top==N-1) { printf("Overflow"); } else { top++; stack[top]=x; } } void pop() { int item; if(top==-1) { printf("Underflow"); } else { item=stack[top]; top--; } printf("%d ",item); } void peek() { if(top==-1) { printf("Stack is empty"); } else { printf("%d ",stack[top]); } } void display() { int i; for(i=top;i>=0;i--) { printf("%d\t",stack[i]); } } void main() { int ch; do { printf("Enter choice for operation: "); scanf("%d",&ch); switch(ch) { case 1: push(); break; case 2: pop(); break; case 3: peek(); break; case 4: display(); break; default: printf("Invalid choice"); } }while(ch!=0); }

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Thanks alot ma'am🙏😍 I had studied whole stack and tree with in one night and the very next Morning I score 55+ out of 77 in theory paper of 12 th premilary exam 😎

Here is C code: Stack with Array #include #include #define N 5 int stack1[N]; int top=-1; void push() { int item; if(top==N-1) { printf(" stack is overflow: "); return; } else { printf("Enter item into stack:"); scanf("%d",&item); top++; stack1[top]=item; } } void pop() { int item; if(top==-1) { printf(" stack is underflow: "); return; } else { item=stack1[top]; top--; printf("poped item is: %d ",item); } } void peek() { int item; if(top==-1) { printf(" stack is underflow: "); return; } else { printf("top most element in stack is: %d ",stack1[top]); } } void display() { int i; printf("items in stack are: "); for (i=top;i>=0;i--) { printf("%d ",stack1[i]); } } int main() { int ch; printf("stack operarations with choices 1 for push 2 for pop 3 for peek 4 for display: 0 for exit "); do{ printf(" Enter your choice: "); scanf("%d",&ch); switch (ch) { case 1: push(); break; case 2: pop(); break; case 3: peek(); break; case 4: display(); break; case 0: exit(0); default: printf("Invalid choice:"); //exit(0); } }while (ch!=0); return 0; }

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Before watching ur video, I think that stack is very hard to implement. But now my all doubts are clear about stack. And I can easily implement the stack by using array of c. Thank u mam!

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Program in c++ #include #include #define max 3 using namespace std; class stack{ int top; int st[max]; int item; public: void push(); void pop(); void traverse(); stack(){ top=-1; } }; int main(){ int choice; stack s; char c; do{ cout

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I Really Like Your Simple and Understandable way of Teaching Thank you I Had Watched Full And Now I Know the Stack Very Well thank You Once Again 🙏🙏🙏

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Stack and array is same then why to study stack

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Simple And easy to understand. Moreover, from the very basics. The reader of this comment, If You're trying to understand stack from the very basics and want to know where to apply stacks go through this video.

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While doing pop operation you stored the poping element in integer y. Then how is the element deleted in stack . Please can you help me out mam.

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Mam integer is having 2byte not 4

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Best DS playlist

15:45 guys just add top++ after the push() function in dowhile loop inside switch because you wont be able to display the elements in the stack as the top is only incrementing in the push function but not incrementing in main function.

If want to display stack from bottom , then initialize top = - 1 in display function And then top++

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if any one noticed or not i don't know but integer take space of 2 bytes and mam take 4 bytes on 0:45 but you are the best teacher mam 😇

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We initialized top = -1 therefore we can't put i = top in the for loop of the display function. instead, we should take i = n-1

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