摘要： 1 #include 2 #include 3 /*用sum_series() 求一列数的指定个数的数和(5个数字的和)*/ 4 double sum_series(int num, ...); 5 6 int main() 7 { 8 double s; 9 s = sum_series(5, 0.5, 0.25, 0.125, 0.06254, 2.0);10 printf("Sum of series is %2.8f.\n", s);11 return 0;12 }13 14 double sum_series(int num, ...)15 {... 阅读全文