求教一道c语言题,求级数和的近似值!

//y=x+x*x*x/3*1!+x*x*x*x*x/5*2!+x*x*x*x*x*x*x/7*3!+。令x=0。5,1。0,2。0,3。0,取前十项之和分别计算Y的值。//即：y=求和：(x的2n-1次方)/(2n-1)*(n-1)!n代表第几项（n=1,2,3……）#include "stdio。h"#include "math。h"#define N 10 //取前十项void main(){double accu(float x,int n);//求Y的任意一项的值double acc(int n);//求n的阶乘int i;double y=0;for(i=1;i