数字与字符串的相互转换

Posted 2020-11-26 hhyx

# 数字转字符串

 

1 int a;
2 string res;
3 stringstream ss;          //定义流ss
4 ss << a;                     //将数字a转化成流ss
5 ss >> res;                  //将流ss转化成字符串
6 return 0;

 

 

# 字符串转数字

 

1 double a;
2 string res= "123.32";
3 stringstream ss;  
4 ss << res;                  
5 ss >> a;
6 return 0;