struct nodef {
string name;
int score;
bool operator <(const nodef &n) const {
return this -> score < n.score;
}
};
These sentences indicate that a structure named nodef has been established. Its member variables include name and score. The operator < is overloaded, which means that when a nodef and nodef are used for the < operation, the second nodef is passed in as the parameter n. And the return value of the operation is bool type, and the comparison is based on the score variable.