Program to Calculate Permutation and Combination

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/* Calculate Permutation and Combination (nCr and nPr)

Using Function */

#include<stdio.h>

#include<conio.h>

void main()

{

int n,c,r,ncr,npr;

long int fact( int );  /* function Prototype */

clrscr();

printf(“Enter the Value of n and r, n must be n>r :\n”);

scanf(“%d%d”,&n,&r);

ncr= fact(n)/fact(n-r);

npr= fact(n)/(n*fact(n-r));

 

printf(“NCR = %d\n”,ncr);

printf(“NPR = %d\n”,npr);

getch();

}

long int fact( int x)

{

long int f=1;

int i;

for(i=1;i<=x;i++)

f=f*i;

return(f);

}

resume

Mohit Arora
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