retrieving data from a file.

[Rowland1965]

I am getting large negative numbers like the data from the .txt file isn't being read. Here is the code. What am I doing wrong?

#include <iostream>
#include <fstream>

using namespace std;

int main()
{



//Declare string varibles
ifstream inFile;
ofstream outFile;

//Open the files
inFile.open("inInfo.txt");
outFile.open("outInfo.txt", ios::app);

//Initialize data
int ch;
int ch1;
int test2;
int test3;
int sum;

//Get data from inInfo.txt
inFile >> ch;
inFile >> test2;
inFile >> test3;



//mathmatical funtions

sum = test2 + test3;
cout << "The sum of"<< test2 << " and " << test3 <<"is" << sum;
cout << endl;
sum = test2 * test3;
cout << "The product of"<< test2 <<" and " << test3 <<" = " << sum;
cout << endl;



//Close the files
inFile.close();
outFile.close();


return 0;

}

[writetonsharma]

so what problem you are facing in this?

[fud lite]

I think your problem is that you arent converting the text from the file into ints or doubles.

Heres a clean(er) and quick solution:

#include <iostream>
#include <fstream>
#include <conio.h>

using namespace std;

int main(){
	
	//Declare file streams.
	ifstream input;
	
	//Open the input file
	input.open("inInfo.txt");
	if(!input){
		cout << "inInfo.txt could not be accessed!" << endl;
		return 0;
	}
	
	//Variables
	string temp; //String data from file, to be converted to an int
	int sum[] = {0,0}; //0 for addition, 1 for multiplication
	int test[] = {0,0}; //0 for first line, 1 for second
	
	//Get data from file
	for(int i = 0; i <= 1; i++){
		if(!input.eof()){
			getline(input,temp); //Get 1 line from the file and place into temp
			test[i] = atoi(temp.c_str()); //set the test variable to the int version of the line

		}
	}
	
	input.close();
	
	//Mathematical Functions
	sum[0] = test[0] + test[1];
	sum[1] = test[0] * test[1];
	
	cout << "The sum of " << test[0] << " + " << test[1] << " = " << sum[0] << endl;
	cout << "The product of " << test[0] << " * " << test[1] << " = " << sum[1] << endl;
	cout << "\n\n\n";
	cout << "Press any key to exit..."<<endl;
	getch();
	return 0;
}
	
		
	

If the contents of inInfo.txt were:

3
4

The output would be:

The sum of 3 + 4 = 7
The product of 3 * 4 = 12



Press any key to exit...

If i didn't answer your question, please describe your problem a bit more.

Otherwise, I'm glad I could help. :D

But, before I go, one thing you might want to make sure you know:
The difference between declaring, assigning, and initializing.

Above you stated:

//Initialize data
int ch;
int ch1;
int test2;
int test3;
int sum;

That wasn't initializing, that was declaring.

Declaring means telling the compiler you want to make a variable.
Assigning means putting a value into a variable.
Initializing means declaring a variable then assigning it, all in one line.

//Declaring
int a;

//Assigning
a = 2;

//Initializing
int b = 0;

Anyways, hope i helped.

Have a good one.

[Rowland1965]

Thank you very much. You were most helpful.