Q. Write a C program to find the factorial value of a number. Also write the algorithm and draw flowchart.
Ans.
/*c program to find out factorial value of a number*/
#include<stdio.h>
#include<conio.h>
int main()
{
int n,i,fact=1;
printf("Enter any number : ");
scanf("%d", &n);
for(i=1; i<=n; i++)
fact = fact * i;
printf("Factorial value of %d = %d",n,fact);
return 0;
}
The output of above program would be:
Algorithm for calculate factorial value of a number:
[algorithm to calculate the factorial of a number]
step 1. Start
step 2. Read the number n
step 3. [Initialize]
i=1, fact=1
step 4. Repeat step 4 through 6 until i=n
step 5. fact=fact*i
step 6. i=i+1
step 7. Print fact
step 8. Stop
[process finish of calculate the factorial value of a number]
Flowchart for calculate factorial value of a number:
Ans.
/*c program to find out factorial value of a number*/
#include<stdio.h>
#include<conio.h>
int main()
{
int n,i,fact=1;
printf("Enter any number : ");
scanf("%d", &n);
for(i=1; i<=n; i++)
fact = fact * i;
printf("Factorial value of %d = %d",n,fact);
return 0;
}
The output of above program would be:
 |
| Screen shot for calculate factorial value of a number C program |
Algorithm for calculate factorial value of a number:
[algorithm to calculate the factorial of a number]
step 1. Start
step 2. Read the number n
step 3. [Initialize]
i=1, fact=1
step 4. Repeat step 4 through 6 until i=n
step 5. fact=fact*i
step 6. i=i+1
step 7. Print fact
step 8. Stop
[process finish of calculate the factorial value of a number]
Flowchart for calculate factorial value of a number:
 |
| Figure: Flowchart for calculate factorial value of a number C program |
