浙大版《C语言程序设计（第3版）》题目集 习题10-4 递归求简单交错幂级数的部分和 (15分)
#include <stdio.h>double fn(double x, int n);int main(){ double x; int n; scanf("%lf %d", &x, &n); printf("%.2f\n", fn(x, n)); return 0;}double fn(double x, int...
