C++ :: How To Output From TXT File

Aug 20, 2014

So I have a .txt file with, Name >> Username >> password >> adminstatus. It is filled with various names. for e.g.

Bob bobby bob123 1
tim timmy tim123 1
rit ritty rit123 0
john johnny john123 0
mary maryy mary123 mary 1

1 will represent admin in the program and 0 will represent a normal user. I want to make part of the program do something like this. > If adminstatus = 1, discount rate =3%. The thing is I will be using UDF to do so and I am unsure of how I am going to read for each user. What I mean by this is. If tim logins, how do I read ONLY tims line's admin status.

Currently I have a Login UDF. for that UDF I return something I named Loginstatus. If the login status = 1 . It will run the current problem that I'm trying to solve which is displaying the user adminstatus's discount rate. So how am I suppose to display the line of the user that logged in.

Here is the simplified explanation of my program. The user will login ( the program will see if everything matches up[username/password] then return loginstatus =1 if the user login successfully) Once the user logs in the program will bring up a menu which will have 2 options.

1. it will let the user check it's current discount rate.
2. quit.

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C++ :: Multiple Of CSV File Used As Input / Extracting Data To A Output File - Getline Function

Jun 4, 2013

I have written a C++ program I have multiple of CSV file used as input, which I open one at a time and close it after extracting data to a output file which is the only file.

I run getline(inFile,line);
outFile << line << endl;

I run this code, and only part of it is goes to the output file I got, also have spacing randomly to specific file and inconsistent

But when I slower the code, like system("Pause") in the loop, I can get extract what I want perfectly....

Is my program running to fast, why getline would be skipping part of what things I want?

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C :: Program To Calculate Students Grades From Input File And Write To Output File

Aug 29, 2014

One of my class assignments is to create a program that receive a .txt file containing a students name and their grades as follows:

John K. 99, 87, 57, 89, 90, 95
Amanda B. Jones 100, 88, 76, 99, 86, 92
etc..

The number of students is unknown until run time. You have to take those grades and average them weighing the first (4) at 10% a piece and the last (2) at 30% each.

Then return an output file with the students name and their letter grade A,B,C,D,F based on their computed score. In addition, on screen it needs to display the average scores for each Q1, Q2, etc. as well as the minimum and maximum for each test on the screen. I am having a hard time in assigning the scores to a variable so that they can then be computed as an average and then used to determine a letter grade. I have begun to write the code and am a bit stuck..here's what I have so far:

Code:

#include <stdio.h>
#include <stdlib.h>
#include <math.h>

[Code]....

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C :: Computing Grades From Input File And Writing To Output File

Aug 31, 2014

One of my class assignments is to create a program that receive a .txt file containing a students name and their grades as follows: John K. 99, 87, 57, 89, 90, 95 Amanda B. Jones 100, 88, 76, 99, 86, 92 etc.. The number of students is unknown until run time. You have to take those grades and average them weighing the first (4) at 10% a piece and the next (2) at 15% each and the final at 30%. Then return an output file with the students name and their letter grade A,B,C,D,F based on their computed score. In addition, on screen it needs to display the average scores for each Q1, Q2, etc. as well as the minimum and maximum for each test on the screen. I am having a hard time in assigning the scores to a variable so that they can then be computed as an average and then used to determine a letter grade. I have begun to write the code and am a bit stuck..here's what I have so far:

Code:
//
// main.c
// Final Exam
//

[Code].....

The problem I'm having now is how to go about passing the grades to the function computeGrade and then compute the average and return that to the function.

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C++ :: Decompress Input File And Write Results Into Output File?

Jul 8, 2013

how do i decompress an input file and write the results into an output file?

also my do while loop is supposed to keep going unless the user selects the option to exit the program, instead it exits after finishing ay of the options.

here's my code so far...

#include <iostream>
#include <iomanip>
#include <fstream>

[Code]....

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C :: Naming Output File Based On Input File Name

Sep 7, 2013

I have a program where I will read in a certain .txt file, such as "financial_data.txt" and I will be doing some sorting with this data.

I want my program to write out the sorted data to an output file and I want the name of the output file to be based off of the input name. For example, since my input file is "financial_data.txt", I want the output file name to be "financial_data_out.txt".

I am having a hard time finding examples online and in my reference manuals...

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C++ :: Remove Comments From Input File And Then Put It Into Output File

Mar 11, 2013

I have written this code to remove the comments from an input file and then put it into an output file. The program compiles and runs but it removes the whole line of code when it encounters a /* */ type comment. I believe the problem is in the while loop but I just don't know where.

#include <iostream>
#include <fstream>
#include <string>
using namespace std;
int main(void) {
string infile, outfile;
ifstream source;
ofstream target;

[Code]...

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C++ :: Read Input File (XML) And Generate Output File

Mar 25, 2013

I have code that reads an input file and generates an output file .For reading the input file we have a xml file.If there is an error while reading or writing the output file the an errored file is generated. But in the errrored file the fields are not coming as in accordance with the reader xml . They are coming randomly . In the module for reading and writing the errored file list is being used . What should be done to write in the errored file as the reader xml fields.

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C++ :: Read Input File (XML) And Generate Output File

Mar 25, 2013

I have code that reads an input file and generates an output file .For reading the input file we have a xml file.If there is an error while reading or writing the output file the an errored file is generated. But in the errrored file the fields are not coming as in accordance with the reader xml .they are coming randomly . In the module for reading and writing the errored file list is being used . What should be done to write in the errored file as the reader xml fields.

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C/C++ :: Read From File And Print Output To File?

Apr 20, 2014

I know this is how you read from a file. I also want to print my output to the same name of the file plus ".txt". So if my file is called "text" I want to print it to a file called "text.txt".

#include <stdio.h>
#include <stdlib.h>
#include <stdbool.h>

[Code]....

Would it be something like this? Is it better to use "a" or "w" in the fopen? I want to write to it several times.

#include <stdio.h>
#include <stdlib.h>
#include <stdbool.h>

[Code].....

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C :: Redirecting Output To A File

Jan 16, 2014

i am writing a c program, that sets up serial communication with my modem. The program works so far but i want the output to be redirected in a .txt or .csv file.

Code:

#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <unistd.h>
#include <fcntl.h>
#include <termios.h>

[Code]....

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C :: Program To Output PPM File

Oct 8, 2014

How do you make a program output a ppm file?

Code:
#include <stdio.h>
void make_pixel
(
int r, // red intensity

[Code].....

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C++ :: Output To Console And Log File

Apr 4, 2013

I have 18,000 lines of code that i would like to upgrade to include a log file. I want to replace the cout with a stream or something similar so that i can easily output to the console and to a log file at the same time with minimal change to 18,000 lines of code. I'm nearly there.

I used this post heavily as a reference; [URL] .... however it is highly incomplete and this is above my knowledge so I'm struggling somewhat.

I was able to get the bulk of it working with some guess work and modification to the code from that link.

For some reason i had to comment out "mstream(void);" and "~mstream(void);"

Also how to get :

mstream& operator<< (ostream& (*pfun)(ostream&)) {
pfun(coss);
pfun(cout);
return *this;
}

to work for endl as per the previous link. Not sure if i'm even putting it in the right place. Otherwise the code works fine for streaming to both locations and such. See the code below;

#include <iostream>
#include <fstream>
#include <string>
using namespace std;
class mstream {

[Code] ....

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C++ :: Get Output From File Contents

Dec 30, 2013

#include<iostream.h>
#include<conio.h>
#include<stdlib.h>
#include<string.h>
#include<fstream.h>
#include<graphics.h>
void input();
void output ();

[Code] ....

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C++ :: Program To Output Name From A File

Dec 10, 2014

I am trying to get my program to output the name from a file. The user should enter first name "or" last name. and if the user does not type the name from the input file. the get an error message. How do you do it

#include <iostream>
#include <fstream>
#include <string>
#include <cstdlib>
using namespace std;

const int NUM_STUDENTS = 17;
const int NUM_QUIZZES = 10;
const int NUM_EXAMS = 5;

[Code] ....

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C/C++ :: Output To File Is In Hex Code

Apr 2, 2014

Here is program I have written which reads the destination, then finds it from a separate file, and reserves the information on a different file. But the reserved file has hex code information, how can I output my result to the file in normal alphabet/number/symbol characters? I've tried fputs,fprintf, and fwrite , and all give me the same result. The array c, is the one to be written to file.

void main {
FILE *afile = fopen("flightrecord.txt","r");
int i=0,j=0,k=0,z=0,y=0,sum=0,seat=0,g=0;
char destination[10],a[1000],c[1000],b[1000],name[100],last_name[100],c_number[15],plane[]={'P','6','2'};
printf("What is your destination?");
scanf("%s",&destination);

[Code] ....

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C++ :: File Input And Output Structure

Jul 17, 2013

How to structure the input of one .dat file and outputting into another one. I have to loop through a file structured "doe, john, 1500", check for errors and then increase the mp by 50. You also have to do this through using a person class too. I think I need to use a while loop to go to eof and use getline to input correctly, but im not sure how to structure it.

Data file:
Horowitz,Jake,1200.24
Flabitz,Bubba,1712.38
Blackwell,Sharon,1872.93
Molerat,Rufus,501.00
Goodall,Jane,1567.43
Sommerset,William,1359.57

[Code] ......

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C :: Output Does Not Print On Text File

Jul 19, 2013

In this program I can not print the typed value in the file. The file creation well done but it is an empty file

I press Ctrl +z for EOF

Code:
#include<stdio.h>
int main(void){
FILE *fp;
char ch;
fp=fopen(" Test.txt","w");
printf(" Enter the TEXT

[Code] .....

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C :: Book Database - File Output

Feb 7, 2013

Book database. I use scanf to store book name,author name and year when is book written. Example:

Code:
scanf(" %[^
]",k[i].bookname);

I have problem when i want to printf all books from database with this:

Code:
for(i=0;i<counter;i++){
fscanf(f,"%s %s %d",k[i].bookname,k[i].author,&k[i].year);
printf("
%d %s %s %d",(i+1),k[i].bookname,k[i].author,k[i].year);} Output:

Number Book name Author name Year
1 King John 0
2 William Shakespeare 1590

How can i fix this?

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C :: Saving Output Of Program As TXT File

Feb 21, 2015

My project involves writing a c program to generate a set of 70 decimal numbers. I want to save the output (these 70 numbers) as a txt file. I tried the following:

1. prt scr of output screen and pasting it in notepad. NOT WORKING
2. going to DOS SHELL and doing the following:
c:TCBIN>output.exe>>output.txt
NOT WORKING. Text file is generated, but it does not contain output. It just says:
illegal command: output.exe

What do I do?

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C++ :: How To Output File Into New Program Or Code

Apr 24, 2013

//code
ofstream outFile;
outFile.open("p4a.dat");
outFile << setw(8) << "90.0";
outFile << setw(8) << "75.0";
outFile << setw(8) << "36" << endl;

[Code] .....

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C++ :: How To Output Console Display To TXT File

Aug 8, 2014

I am currently doing a complex number calculator ,and i wish to output my data to a txt.file . i tried fstream and it doesnt work. However the txt.file was created but no text was output.

Below is the program:

#include<iomanip>
#include<cmath>
#include<iostream>
#include<fstream>
using namespace std;
#define PI 3.14159265358979323
double z,x;

[Code]..

When impedance A & B are in series,the effective Impedance is " <<setprecision(4)<< z << " + j" <<setprecision(3)<< x<<endl;

else
cout << "

When impedance A & B are in series,the effective Impedance is " <<setprecision(4)<<z << " - j" <<setprecision(3)<< x*(-1)<<endl;
}
void Complex::showdiv(double &z,double &x) {
if ( x>= 0 )
cout << "

When impedance A & B are in parallel,the effective Impedance is " <<setprecision(4)<< z << " + j" <<setprecision(3)<< x <<endl;
else
cout << "

When impedance A & B are in parallel,the effective Impedance is " <<setprecision(4)<<z << " - j" <<setprecision(3)<< x*(-1) <<endl;
}

class Polar:public Complex //inheritant from class Complex
{
protected:
double r,d,r2,d2;
public:
void PolarValue();
void ShowPolar();

[Code]...

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Sep 15, 2013

I'm trying to write a simple program that will prompt for a string typed in by keyboard and save it to a file. I've tried lots of variations and this is just the latest version.

//Prompt for a string input by keyboard and save it to a file

#include<iostream>
#include<fstream>
#include <string
using namespace std;

[Code] .....

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C++ :: Writing Output Of A Program To A File?

Mar 27, 2013

basic code for writing output of a program to a file? I can't seem to find it online and I need it to complete a project.

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C++ :: Output From Data File Not Working?

Feb 27, 2014

i need my code to stop outputting all the numbers throughout the steps it is going through i just need it to output the total

this is my input
M
C
C
C
L
I
V

and its output is

Your total is 1000
Your total is 1100
Your total is 1200
Your total is 1300
your total is 1350
Your total is 1351

i just need it to output the last number

// write a program to read a string of characters
// that represent a Roman numberal and then convert
// to Arabic form ( an integer
// input from data file

[Code].....

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C++ :: Printing Function Output To A File?

Oct 11, 2013

I have to convert a binary value from an input file (the name of which is given by the user) and then convert the binary to decimal value and print that in an output file.

Right now it is compiling just fine with no error messages, but when I run the program, it doesn't end or print to the output file.

Here is my code at the moment:

#include <cstdlib>
#include <iostream>
#include <iomanip>
#include <fstream>

[Code].....

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