PROGRAM FOR PRIME NO- C Program

/*PROGRAM FOR PRIME NO.*/

#include<stdio.h>

#include<conio.h>

void main()

{

int i,flag=0,n;

clrscr();

printf("Enter the no.::");

scanf("%d",&n);

for (i=2;i<=n/2;i++)

{

if(n%i==0)

{

printf("Not prime");

}

flag==1;

break;

}

if(flag==0)

{

printf("Prime");

}

getch();

}

/* OUTPUT

Enter the no.::17

Prime*/

FACTORIAL OF A NUMBER- C Program

/* FACTORIAL OF A NUMBER*/

#include<stdio.h>

#include<conio.h>

void main()

{

int i,j=1,fact=1;

clrscr();

printf("\n Enter the no.::");

scanf("%d",&i);

while(j<=i)

{

fact=fact*j;

j++;

}

printf("The Factorial of the number is %d",fact);

getch();

}

/*OUTPUT

Enter the no.::5

The Factorial of the number is 120*/

FACTORIAL OF A NUMBER- C Program

/* FACTORIAL OF A NUMBER*/

#include<stdio.h>

#include<conio.h>

void main()

{

int i,j=1,fact=1;

clrscr();

printf("\n Enter the no.::");

scanf("%d",&i);

while(j<=i)

{

fact=fact*j;

j++;

}

printf("The Factorial of the number is %d",fact);

getch();

}

/*OUTPUT

Enter the no.::5

The Factorial of the number is 120*/