C语言编程s(x)=x-x3/3!+x5/5!-x7/7!+……+(-1)n-1·x2n-1/(2n-1)!

#include "stdio。h"void main(){int x,n,up,down,i;float sum;printf("Input x and n:");scanf("%d,%d",&x,&n);up=x;down=1;sum=(float)up/down;for(i=1;i