C++ Programming: How would you write a function that takes a filename and an array of struct time, opens a file, reads each line in the file as the number of days, converts this to a struct time and stores this is in an array? Here is my code so far (p.s. the function i need help with is called void readData): #include #include #include #include #include using namespace std; struct time{ // private: int years, months, days; //public: time(){} time(int days){ } }; time getYearsMonthsDays(int days){ time x; x.years = days/450; days = days%450; x.months = days/30; x.days = days%30; return x; } int getTotalDays(time x){ int totalDays; totalDays = x.years*450 + x.months*30 + x.days; return totalDays; } void openofile(string ofilename,ofstream &fout){ fout.open(ofilename.c_str()); if(!fout){ cout << "Error opening output file..." << endl; exit(1); } } void openifile(string ifilename,ifstream &fin){ fin.open(ifilename.c_str()); if(!fin){ cout << "Error opening input file..." << endl; exit(1); } } void readData(vector &myTimeVector, ifstream &fin){ string ifilename; // takes a file name int days; time xArray[days]; // takes an array of struct time fin.open(ifilename.c_str()); // opens the file while (!fin.eof()){ fin >> days; // reads each line as the number of days time x = time(days); // converts this to a struct time myTimeVector.push_back(x); // and stores this in the array } fin.close(); } bool compare(time a, time b){ if (a.days < b.days) return true; else return false; } void swap(time &a, time &b){ time temp; temp = a; a = b; b = temp; } void sort(vector &myTimeVector){ for (int i = 0; i < myTimeVector.size(); i++) for (int j = i+1; j < myTimeVector.size(); j++) if (compare(myTimeVector[i], myTimeVector[j])) swap (myTimeVector[i], myTimeVector[j]); } void printData(vector myTimeVector, ostream &out){ time x; for (int i = 0; i < myTimeVector.size(); i++){ out << x.years << "\t" << x.months << "\t" << x.days << endl; } } int main(){ time x; string ifilename1 = "/home/ec2-user/environment/timedata.txt"; string ofilename1 = "/home/ec2-user/environment/timeoutput.txt"; vector myTimeVector; ifstream fin; ofstream fout; openifile(ifilename1,fin); openofile(ofilename1,fout); readData(myTimeVector,fin); fin.close(); printData(myTimeVector,cout); printData(myTimeVector,fout); cout << "========================"<
C++
How would you write a function that takes a filename and an array of struct time, opens a file, reads each line in the file as the number of days, converts this to a struct time and stores this is in an array?
Here is my code so far (p.s. the function i need help with is called void readData):
#include<iostream>
#include<string>
#include<fstream>
#include<cstdlib>
#include<
using namespace std;
struct time{
// private:
int years, months, days;
//public:
time(){}
time(int days){
}
};
time getYearsMonthsDays(int days){
time x;
x.years = days/450;
days = days%450;
x.months = days/30;
x.days = days%30;
return x;
}
int getTotalDays(time x){
int totalDays;
totalDays = x.years*450 + x.months*30 + x.days;
return totalDays;
}
void openofile(string ofilename,ofstream &fout){
fout.open(ofilename.c_str());
if(!fout){
cout << "Error opening output file..." << endl;
exit(1);
}
}
void openifile(string ifilename,ifstream &fin){
fin.open(ifilename.c_str());
if(!fin){
cout << "Error opening input file..." << endl;
exit(1);
}
}
void readData(vector <time> &myTimeVector, ifstream &fin){
string ifilename; // takes a file name
int days;
time xArray[days]; // takes an array of struct time
fin.open(ifilename.c_str()); // opens the file
while (!fin.eof()){
fin >> days; // reads each line as the number of days
time x = time(days); // converts this to a struct time
myTimeVector.push_back(x); // and stores this in the array
}
fin.close();
}
bool compare(time a, time b){
if (a.days < b.days)
return true;
else
return false;
}
void swap(time &a, time &b){
time temp;
temp = a;
a = b;
b = temp;
}
void sort(vector <time> &myTimeVector){
for (int i = 0; i < myTimeVector.size(); i++)
for (int j = i+1; j < myTimeVector.size(); j++)
if (compare(myTimeVector[i], myTimeVector[j]))
swap (myTimeVector[i], myTimeVector[j]);
}
void printData(vector <time> myTimeVector, ostream &out){
time x;
for (int i = 0; i < myTimeVector.size(); i++){
out << x.years << "\t" << x.months << "\t" << x.days << endl;
}
}
int main(){
time x;
string ifilename1 = "/home/ec2-user/environment/timedata.txt";
string ofilename1 = "/home/ec2-user/environment/timeoutput.txt";
vector<time> myTimeVector;
ifstream fin;
ofstream fout;
openifile(ifilename1,fin);
openofile(ofilename1,fout);
readData(myTimeVector,fin);
fin.close();
printData(myTimeVector,cout);
printData(myTimeVector,fout);
cout << "========================"<<endl;
fout << "========================"<<endl;
sort(myTimeVector);
printData(myTimeVector,cout);
printData(myTimeVector,fout);
fout.close();
return 0;
}
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