Question

编程问题(计算公式)

c(m,n)=m!/(n!*(m-n)!).

Answer 1

#include <stdio.h>
main()
{
float m=1,n=1,x=1,m1=1,n1=1,mn=1;
int i;
printf("Input M,N\n");
scanf("%f,%f",&m,&n);
for (i=1;i<=m;i++)
m1=m1*i;
for (i=1;i<=n;i++)
n1=n1*i;
for (i=1;i<=m-n;i++)
mn=mn*i;
printf ("the number is %f",m1/(n1*mn));
getch();
}