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cpp string

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优雅切割

  • 默认空格
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    #include <string>
    #include <sstream>
    #include <iostream>

    using namespace std;

    int main() {
        istringstream iss("capiTalIze   tHe titLe");
        string s;
        while (iss >> s) {
            std::cout << "size = "<< s.size() << " " << s << std::endl;
        }
        return 0;
    }
  • 指定字符
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    #include <string>
    #include <sstream>
    #include <iostream>

    using namespace std;

    int main() {
        istringstream iss("capiTalIze,    tHe, titLe");
        string s;
        while (getline(iss, s, ',')) {
            std::cout << "size = "<< s.size() << " " << s << std::endl;
        }
        return 0;
    }
  • 优雅format
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    #include <string>
    #include <sstream>
    #include <iostream>

    using namespace std;

    int main() {
        istringstream iss("1 2 3");
        int i, j, k;
        iss >> i >> j >> k;
        cout << "i=" << i << ", j=" << j << ", k=" << k << endl;
        return 0;
    }