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Program14.c
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Program14.c
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#include<stdio.h>
#define MAX 100
int stack[MAX],top=-1;
int auxStack[MAX],auxTop=-1;
int isEmpty(int top)
{
if(top==-1)
return 1;
else
return 0;
}
void push(int data)
{
if(top==MAX-1)
printf("\nStack Overflow");
else
{
stack[++top]=data;
if(isEmpty(auxTop))
{
auxStack[++auxTop]=data;
}
else{
if(data<=auxStack[auxTop])
{
auxStack[++auxTop]=data;
}
}
}
}
void pop()
{
int del;
if(top==-1)
{
printf("\nStack empty.");
}
else{
del=stack[top--];
if(del==auxStack[auxTop])
{
auxTop--;
}
printf("\nDeleted : %d",del);
}
}
void displayStack()
{
if (top==-1)
printf("\nStack empty");
else
{
printf("\n");
for (int i=0;i<=top;i++)
{
printf("%d\n", stack[i]);
}
}
}
void displayMin()
{
if(auxTop==-1)
printf("\nStack Empty");
else
printf("\nMinimum Element : %d",auxStack[auxTop]);
}
int main()
{
int ch,element;
do
{
printf("\n\nChoose operation");
printf("\n1.Push");
printf("\n2.Pop");
printf("\n3.Display stack");
printf("\n4.Display min");
printf("\n5.Exit\n");
printf("\nEnter an operation\n");
scanf("%d",&ch);
switch(ch)
{
case 1:
printf("\nEnter element to insert\n");
scanf("%d",&element);
push(element);
break;
case 2:
pop();
break;
case 3:
displayStack();
break;
case 4:
displayMin();
break;
}
}while(ch<5);
return 0;
}