怎么将字符串"80%"的80提取出来赋值给一个double变量

Question

怎么将字符串"80%"的80提取出来赋值给一个double变量,随便什么语言，讲一下方法
String a = "80%"
double b;

怎么拿到80

Answer 1

#python
a = "80%"
a=a.replace("%","")
b=float(a)

//c#
string a = "80%";
a=a.replace("%","");
b=double.parse(a);