definitions.txt檔案：
hospital 10 floor
floor 4 wing
wing 2 long_corridor
wing 1 connecting_corridor
long_corridor 21 patient_room
connecting_corridor 5 supply_room
patient_room 2 bed
patient_room 4 outlet
patient_room 1 bathroom
outlet 1 face_plate
outlet 2 socket
bathroom 1 sink
sink 2 small_rubber_washer
sink 1 large_rubber_washer
floor 1 central_lobby
central_lobby 2 couch
central_lobby 1 television
C++代碼：
#include <string>
#include <iostream>
#include <fstream>
using namespace std;
struct node {
string parent;
int data;
string child;
} p[17];
int main() {
int n = 0;
ifstream in("definitions.txt", ios::in);
if (!in.is_open()) {
cout << "Error: opening file fail" << endl;
exit (1);
}
while (!in.eof() && n < 17) {
in >> p[n]. parent >> p[n].data >> p[n].child;
n++;
}
//test
for(n=0; n<17; n++) {
cout<<p[n]. parent <<" "<<p[n].data<<" "<<p[n].child<<endl;
}
in.close();
return 0;
}
作用：將txt檔案中的資訊存入結構體陣列p[17]中
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