求大神解答 初学c++，想计算正弦的近似值，该怎么操作？

Question

c++， 计算正弦的近似值。sin(x)=x-x^3/3!+x^5/5!-x^7/7!+…… 要求用while、do-while和for循环语句

Answer 1

Private Sub Command2_Click()Dim x, an, sinx, nx = Val(InputBox("x="))an = xn = 1jc = 1sinx = 0Do Until Abs(an) < 10 ^ -6sinx = sinx + ann = n + 1jc = jc * (2 * n - 2) * (2 * n - 1)an = (-1) ^ (n - 1) * x ^ (2 * n - 1) / jcLoopPrint sinxEnd Sub