IntNode的类型定义为:Р struct IntNode {int data; IntNode* next;};Р2Р编写一个递归函数“int FF(int a[], int n)”,求出数组a中所有n个元素之积并返回。Р3Р #include<stdio.h>Р int Count(int a[], int n, int x) Р {Р int i,c=0;Р for(i=0;i<n;i++)Р if(a[i]>x) c++;Р return c;Р }Р void main() {Р int a[8]={20,15,32,47,24,36,28,70};Р int b=Count(a,8,30);Р printf("b=%d\n",b);Р }Р3Рint WB(int a[], int n, int x) {Р for(int i=0;i<n;i++)Р if(a[i]==x) return 1;Р return 0;Р }Р3Р#include<stdio.h>Р struct Worker {char name[15]; int age; float pay;};Р int Less(struct Worker r1, struct Worker r2) {Р if(r1.age<r2.age) return 1; else return 0;Р }Р void main() {