Write a recursive program to print the value of factorials from 1 to N using C/C++?

Question

Input:
arr = {'a', 'b'}, length = 3

Output:
aaa
aab
aba
abb
baa
bab
bba
bbb

Answer 1

this piece of code will print factorial of all number ranging from 1 to n. Complexity is O(n).

  #include <stdio.h>
    int fact(int n)
     {
         static int count=1;
         if(n==0)
           return 1;
         else
          n=n*fact(n-1);
         printf("factorial of %d=%d\n",count++,n);
         return n;
     }

    int main(void) {
        int n;
        printf("enter the number:\n");
        scanf("%d",&n);
        fact(n);
        return 0;
    }

Answer 2

#include<stdio.h>
int fact(int);
int main(){
  int num,f;
  printf("\nEnter a number: ");
  scanf("%d",&num);
  f=fact(num);
  printf("\nFactorial of %d is: %d",num,f);
  return 0;
}

int fact(int n){
   if(n==1)
       return 1;
   else
       return(n*fact(n-1));
 }

Answer 3

#include<stdio.h>

int fact(int);

int main(){
  int n1,f;
  printf("\nEnter a number: ");
  scanf("%d",&n1);
  f=fact(num);
  printf("\nFactorial of %d is: %d",n1,f);
  return 0;
}

int fact(int n){
   if(n==1)
       return 1;
   else
       return(n*fact(n-1));
 }

Comments

I think the question if to find the factorial of all values from 1 to N not just N. Do you like to edit the answer.