字符串的内容
G01 2021 12 14 00 00 00 4.847967065871E-04-1.023181539495E-11 0.000000000000E+00
该回答引用GPT:
#include <regex>
#include <string>
#include <iostream>
int main()
{
std::string str = "G01 2021 12 14 00 00 00 4.847967065871E-04-1.023181539495E-11 0.000000000000E+00";
std::regex pattern("[-+]?[0-9]*\\.?[0-9]+([eE][-+]?[0-9]+)");
std::smatch result;
int count = 0;
while (std::regex_search(str, result, pattern))
{
std::cout << result[0] << std::endl;
count++;
if (count == 3)
break;
str = result.suffix().str();
}
return 0;
}
上面的代码可以从字符串中提取出三个有科学计数法的数字。
如还有疑问,可留言帮助解决。