函数fun的功能是：统计所有小于等于n(n＞2)的素数的个数，素数的个数作为函数值返回。 请在程序的下画线处填入正确的内容并把下画线删除，使程序得出正确的结果。#includeint fun(int n){ int i,j, count=0;printf("\nThe prime number between 3 to %d\n", n);for (i=3; i<=n; i++) {/**********found**********/for (___1___; j=i){ count++; printf( count%15? "%5d":"\n%5d",i); }}return count;}main(){ int n=20, r;r = fun(n);printf("\nThe number of prime is : %d\n", r);}