Write C programs that implement stack (its operations) using i) Arrays

Write C programs that implement stack (its operations) usingi) Arrays

program code:

 

#include<stdio.h>

#include<conio.h>

int st_arr[20];

int t=-1;

void push_ele(int ele);

int pop_ele();

void display_ele();

void main()

{

char choice,num1=0,num2=0;

while(1)

{

clrscr();

printf("======================================");

printf("\n\t\t MENU ");

printf("\n======================================");

printf("\n[1] Using Push Function");

printf("\n[2] Using Pop Function");

printf("\n[3] Elements present in Stack");

printf("\n[4] Exit\n");

printf("\n\tEnter your choice: ");

fflush(stdin);

scanf("%c",&choice);

switch(choice-'0')

{

case 1:{printf("\n\tElement to be pushed: ");

scanf("%d",&num1);

push_ele(num1);

break;

}

case 2:

{

num2=pop_ele(1);

printf("\n\tElement to be popped: %d\n\t",num2);

getch();

break;

}

case 3:

{

display_ele();

getch();

break;

}

case 4:exit(1);

break;

default:

printf("\nYour choice is invalid.\n");

break;

}

}

}

 /*Implementing the push() function. */

 void push_ele(int ele)

{

if(t==99)

{

printf("STACK is Full.\n");

getch();

exit(1);

}

st_arr[++t]=ele;

}

 /*Implementing the pop() function. */

 int pop_ele()

{

int ele1;

if(t==-1)

{

printf("\n\tSTACK is Empty.\n");

getch();

exit(1);

}

return(st_arr[t--]);

}

 /*Implementing display() function. */ 

void display_ele()

{

int k;

printf("\n\tElements present in the stack are:\n\t");

for(k=0;k<=t;k++)

printf("%d\t",st_arr[k]);

}