- 注册时间
- 2021-4-16
- 最后登录
- 2024-9-9
- 在线时间
- 6 小时
编程入门
- 龙马币
- 72
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函数原型:
string to_string (int val);
string to_string (long val);
string to_string (long long val);
string to_string (unsigned val);
string to_string (unsigned long val);
string to_string (unsigned long long val);
string to_string (float val);
string to_string (double val);
string to_string (long double val);
功能:
将数值转化为字符串。返回对应的字符串。
例子:
- #include <iostream>
- #include <string>
- using namespace std;
- int main()
- {
- string pi = "pi is " + std::to_string(3.1415926);
- string perfect = to_string(1 + 2 + 4 + 7 + 14) + " is a perfect number";
- cout << pi << '\n';
- cout << perfect << '\n';
- system("pause");
- return 0;
- }
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