Question

星字塔6行,分别为1,3,5,7,9,11用C++程序如何表示？

Answer 1

#include <stdio.h> int main(){ int fact = 1, i, sum = 0; for (i = 1; i <= 9; i += 2){ fact *= i; if (i - 1)fact *= (i-1); sum += fact; } printf ("%d\n", sum); return 0;}