Question

c语言计算s=1/2-3/4+5/6-···-99/100

Answer 1

问：c语言计算s=1/2-3/4+5/6-···-99/100

答：亲，您好！计算s = 1/2 - 3/4 + 5/6 - ··· - 99/100 的值也叫等差数列求和，s = a1 + a2 + a3 + ··· + an，这里的 a1 = 1/2 ，an = 99/100，d = a2 − a1 = 1/4 ，那么求和的表达式为: s = 1/2 + 1/4 + 1/4 + ··· + 1/4 = (1/2 + 99/100) / 4 = (101/200) / 4 = 25/50 = 1/2因此，s = 1/2 - 3/4 + 5/6 - ··· - 99/100 = 1/2。希望我的答案能帮助到您！