php中如何将json数据输出

Answer 1

include <iostream>
#include <stdio.h>
int jc(int m){
if(m!=1) return m*jc(m-1);
else return 1;
}
int c(int m,int n){
if(m>=n) return jc(m)/(jc(n)*jc(m-n));
}
int main(void){
int m,n;
scanf("%d%d",&m,&n);
printf("%d\n",c(m,n));
return 0;
}