Question

Write an algorithm to find npr ncr in c++

Answer 1

/* C++ Program - Find ncR and nPr */ #include<iostream.h> #include<conio.h> long int fact(int); //function declaration void main() { clrscr(); int n, r; long int ncr, npr; cout<<"Enter the value of n : "; cin>>n; cout<<"Enter the value of r : "; cin>>r; npr=fact(n)/fact(n-r); // calling the function or function calling ncr=npr/fact(r); //function calling cout<<"NPR value = "<<npr<<"\n"; cout<<"NCR value = "<<ncr<<"\n"; getch(); } long int fact(int x) //defining the function or function definition { int i, f=1; for(i=2; i<=x; i++) { f=f*i; } return f; }