简单题

#include 
      
       #include 
       
        #include 
        
         #include 
         
          using namespace std;struct Player{    string name;    double speed;    int weight, strength;    Player()    {}    Player(string name, double speed, int weight, int strength): name(name), speed(speed), weight(weight), strength(strength)    {}}player[5];int weight, strength;double speed;void init(){    player[0] = Player(string("Wide Receiver"), 4.5, 150, 200);        player[1] = Player(string("Lineman"), 6.0, 300, 500);        player[2] = Player(string("Quarterback"), 5.0, 200, 300);    }void work(){    bool did = false;    for (int i = 0; i < 3; i++)        if (speed <= player[i].speed && weight >= player[i].weight && strength >= player[i].strength)    {        if (did)            putchar(' ');        else            did = true;        printf("%s", player[i].name.c_str());    }    if (!did)        puts("No positions");    else        puts("");}int main(){    init();    while (scanf("%lf%d%d", &speed, &weight, &strength) != EOF)    {        if (speed == 0 && weight == 0 && strength == 0)            break;        work();    }    return 0;}