如何将 C++ 字符串转换为 int?
可能的重复:
如何在 C++ 中将字符串解析为 int?
如何将 C++ 字符串转换为 int?
How do you convert a C++ string to an int?
假设您希望字符串中包含实际数字(例如1"、345"、38944").
Assume you are expecting the string to have actual numbers in it ("1", "345", "38944", for example).
另外，假设您没有 boost，并且您真的想用 C++ 方式来实现，而不是笨拙的旧 C 方式.
Also, let's assume you don't have boost, and you really want to do it the C++ way, not the crufty old C way.
推荐答案
#include <sstream>
// st is input string
int result;
stringstream(st) >> result;
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