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  1. #include <iostream>
  2. //引入C++標準函式庫<string>
  3. #include <string>
  4. #include <stdlib.h>
  5. using namespace std;
  6. int main(void) {
  7.   //C++的字串
  8.   string str1="Wel";
  9.   string str3="me";
  10.   string str4;
  11.    //C的字串
  12.   char *str2="co";
  13.   //使用+,=運算子做C++字串連結，str4結果產生Welcome
  14.   str4= str1.append(str2 + str3);
  15.   cout << "str4=" << str4 << endl;  
  16.   return 0;
  17. }
  18.  
Success #stdin #stdout 0s 5304KB
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stdin
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Standard input is empty
stdout
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str4=Welcome
https://ideone.com/Q4jhVA
language:
C++14 (gcc 8.3)
created:
10 days ago
visibility:
public

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