Hi to all, i need to implement ofstream outfile code. Here is my code.How can i implement the ofstream outfile to ,so that the contents of the collection are re-written to the file before the application terminates.
#include "stdafx.h"
using namespace std;
int _tmain(int argc, _TCHAR* argv[])
{
int list[12];
int option;
int total, largest, smallest, occurrences, scale_factor;
double average;
// cout << "Enter 12 positive integers for the list\n";
ifstream infile("data.dat");
for (int i = 0; i < 12; i++)
infile >> list[i];
// int option;
// int total, largest, smallest, occurrences, scale_factor;
// double average;
do
{
cout << "\n\n\n";
cout << "\t0. Display\n";
cout << "\t1. Total\n";
cout << "\t2. Average\n";
cout << "\t3. Largest\n";
cout << "\t4. Smallest\n";
cout << "\t5. Occurrences of value\n";
cout << "\t6. Scale Up\n";
cout << "\t7. Re-write file\n";
cout << "\t99. To Exit\n";
cout << "\t\tEnter option : ";
cin >> option;
cout << endl << endl;
switch (option)
{
case 0:
cout << "\t\t\t\tList is now\n";
for ( int i = 0; i < 12; i++)
cout << "\t\t\t\t" << list[i] << endl;
break;
case 1:
total = 0;
for (int i =0; i < 12; i++)
total += list[i];
cout << "\t\t\t\tTotal is " << total << endl;
break;
case 2:
total = 0;
for (int i =0; i < 12; i++)
total += list[i];
average = (double)total/12;
cout << "\t\t\t\tAverage is " << average << endl;
break;
case 3:
largest = 0;
for (int i =0; i < 12; i++)
if (largest < list[i])
largest = list[i];
cout << "\t\t\t\tLargest is " << largest << endl;
break;
case 4:
smallest = list[0];
for (int i =1; i < 12; i++)
if (smallest > list[i])
smallest = list[i];
cout << "\t\t\t\tSmallest is " << smallest
<< endl;
break;#include "stdafx.h"
using namespace std;
int _tmain(int argc, _TCHAR* argv[])
{
int list[12];
int option;
int total, largest, smallest, occurrences, scale_factor;
double average;
// cout << "Enter 12 positive integers for the list\n";
ifstream infile("data.dat");
for (int i = 0; i < 12; i++)
infile >> list[i];
// int option;
// int total, largest, smallest, occurrences, scale_factor;
// double average;
do
{
cout << "\n\n\n";
cout << "\t0. Display\n";
cout << "\t1. Total\n";
cout << "\t2. Average\n";
cout << "\t3. Largest\n";
cout << "\t4. Smallest\n";
cout << "\t5. Occurrences of value\n";
cout << "\t6. Scale Up\n";
cout << "\t7. Re-write file\n";
cout << "\t99. To Exit\n";
cout << "\t\tEnter option : ";
cin >> option;
cout << endl << endl;
switch (option)
{
case 0:
cout << "\t\t\t\tList is now\n";
for ( int i = 0; i < 12; i++)
cout << "\t\t\t\t" << list[i] << endl;
break;
case 1:
total = 0;
for (int i =0; i < 12; i++)
total += list[i];
cout << "\t\t\t\tTotal is " << total << endl;
break;
case 2:
total = 0;
for (int i =0; i < 12; i++)
total += list[i];
average = (double)total/12;
cout << "\t\t\t\tAverage is " << average << endl;
break;
case 3:
largest = 0;
for (int i =0; i < 12; i++)
if (largest < list[i])
largest = list[i];
cout << "\t\t\t\tLargest is " << largest << endl;
break;
case 4:
smallest = list[0];
for (int i =1; i < 12; i++)
if (smallest > list[i])
smallest = list[i];
cout << "\t\t\t\tSmallest is " << smallest
<< endl;
case 5:
occurrences = 0;
int value;
cout << "Enter a value : ";
cin >> value;
for (int i = 0; i < 12; i++)
if (list[i] == value)
occurrences++;
cout << "\t\t\t\tNumber of occurrences is "
<< occurrences << endl;
break;
case 6:
cout << "Enter the scale factor :";
cin >> scale_factor;
for (int i = 0; i < 12; i++)
list[i] *= scale_factor;
break;
case 99:
break;
default :
cout << "invalid option\n";
}
} while (option != 99);
return 0;
}
PulsarScript 0 Junior Poster
Ancient Dragon 5,243 Achieved Level 70 Team Colleague Featured Poster
your program already reads the file -- just to the opposite of that loop starting at line 319.
r_heidari 0 Newbie Poster
using ofstream is like ifstream :
ofstream outfile=("out.txt");
outfile<<yourdata;
outfile.close();
mridul.ahuja 4 Coding Enthusiast
this is how we write to a file
#include <iostream>
#include <fstream>
using namespace std;
int main () {
int What_to_write;
fstream myfile;
myfile.open ("filename.txt");
myfile << What_to_write;
myfile.close();
}
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