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  1. #include <iostream>
  2. #include <forward_list>
  3.  
  4. int main() {
  5.     std::forward_list<int> flst = {1, 2, 3};
  6.     flst.insert_after(flst.begin(), 4);  // 在指定位置后插入元素
  7.     for (int num : flst) {
  8.         std::cout << num << " ";
  9.     }
  10.     return 0;
  11. }
Success #stdin #stdout 0.01s 5288KB
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Standard input is empty
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1 4 2 3
https://ideone.com/VjZW9u
language:
C++ (gcc 8.3)
created:
11 days ago
visibility:
public

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