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Write a c program to calculate factorial of a number using stack 2write a c program to generate a Fibonacci series using stack number of Fibonacci series is input by the user?
Wiki User
∙ 15y ago
#include<stdio.h>
#include<conio.h>
#include<stdlib.h>
int stack[10],n=0;
int fact(int);
int pop();
void push(int);
main()
{
int num;
printf("\n FACTORIAL USING STACK IMPLEMENTATED WITH ARRAY\n");
printf("\n Enter a number whose factorial is to be found(1-9): ");
scanf("%d",&num);
printf("\n The factorial is : %d",fact(num));
getch();
} void display()
{
int i;
printf("\n The stack is :\n");
for(i=1;i<=n;i++)
{
printf("%d\t",stack[i]);
}
}
int pop()
{ if(n==0)
{
printf("\n Stack empty!Pop not possible!");
exit(1);
}
else
{
int res=stack[n];
--n;
display();
return res;
}
} void push(int x)
{
if(n==9)
{
printf("\n Stack full!Push not possible");
exit(1);
}
else
{
n++;
stack[n]=x;
display();
}
}
int fact(int num)
{
if(num==2)
{
push(2);
push(1);
int res=1;
display();
while(n>=1)
res*=pop();
return res;
} else
{
push(num);
return fact(num-1);
}
}
Wiki User
∙ 15y ago
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