PLEASE CHECK IF I AM RIGHT ,Write the code for the Stack class (that is adapted from the code given to you for the List class) i
#include <stdio.h> #include <stdlib.h> #include <conio.h> #define MAX 3 // Altering this value changes size of stack created int st[MAX], top=-1; void push(int st[], int val); int pop(int st[]); int peek(int st[]); void display(int st[]); int main(int argc, char *argv[]) { int val, option; do { printf("\n *****MAIN MENU*****"); printf("\n 1. PUSH"); printf("\n 2. POP"); printf("\n 3. PEEK"); printf("\n 4. DISPLAY"); printf("\n 5. EXIT"); printf("\n Enter your option: "); scanf("%d", &option); switch(option) { case 1: printf("\n Enter the number to be pushed on stack: "); scanf("%d", &val); push(st, val); break; case 2: val = pop(st); if(val != -1) printf("\n The value deleted from stack is: %d", val); break; case 3: val = peek(st); if(val != -1) printf("\n The value stored at top of stack is: %d", val); break; case 4: display(st); break; } // end of switch }while(option != 5); return 0; } // end of main () void push(int st[], int val) { if(top == MAX-1) { printf("\n STACK OVERFLOW"); } else { top++; st[top] = val; } } int pop(int st[]) { int val; if(top == -1) { printf("\n STACK UNDERFLOW"); return -1; } else { val = st[top]; top--; return val; } } void display(int st[]) { int i; if(top == -1) {printf("\n STACK IS EMPTY");} else { for(i=top;i>=0;i--) printf("\n %d",st[i]); printf("\n"); // Added for formatting purposes } } int peek(int st[]) { if(top == -1) { printf("\n STACK IS EMPTY"); return -1; } else return (st[top]); }
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