Write a program that reads from total.dat file and displays its contents to the console. The program should allow the user to add new entries to the file.
So far this is what I've got and I'm not sure if I even started right.
#include <iostream>
#include <fstream>
using namespace std;
int main () {
ifstream dataIn;
ofstream dataOut;
dataIn.open("total.dat");
cout << dataIn;
return 0;
}
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]...
I have a file named "A6.txt" inside it has this code:
April Joe, 1, SUPER DUPER ULTRA SECRET, 02031982|
Matthews Jocob, 2, TOP SECRET, 11031992|
Garfield Kitty, 3, SECRET, 04041942|
Lake Bill, 4, MEH, 12031968|
Jones Betty, 5, WATCHLIST, 06031974|
Goodman Betty, 6, BANE OF SOCIETY, 05021952|
Very Simple, all it has is "Name, ID, Access, Date of Birth" (DOB needs to be formatted like 00/00/0000 if possible)
Output should Look like :
Client #1:
Name: April Joe
Access: SUPER DUPER ULTRA SECRET
DoB: 02/03/1982
I have been trying to read a comma separated .txt file into an array and print it to console in C++. The txt file consists of two columns of double type data. For some reason the program runs, but gives blank output in the console. I want to know if I am doing something wrong. So far this is what I have:
#include <iostream>
#include <fstream>
#include <string>
using namespace std;
int main() {
int i=0;
double x[10];
double y[10];
string line;
[Code] .....
I'm new to programming and i'm trying to do a certain task. I want to use a for loop to read certain data from a txt file and print them to a console. I'm trying to read student names and their grades.
Something like
3 // 3 represents the number of students.
George 97
Sarah 70
Maya 88
The data may vary but it's always in this format.
how to read and display the content of a text file in my console application using C++. The file contains 25 lines and 3 columns. The first column is "Rank" (numerical values from 1 to 25) the second column is "Name" (25 teams name) and the third column "value" has the amount of point each team is worth. Looking for code for reading and displaying all this information ....
View 4 Replies View RelatedI am currently working on a problem where I read a file into a 2D array, and display data. If you saw my code earlier, this is the same problem, but I am now further along.
The file (90 characters) looks like this:
S
R
R
S
R
R
R
R
S
S
....
The "R" resembles rainy days, the "S" resembles sunny days, and the "C" resembles cloudy days. There are 90 characters in the file. The first 30 are for the month of June, the next 30 are for the month of July, and the last 30 are for the month of August. The 31st day of the months are NOT included.
I read the data into a 3 x 30 array, where the row indicates the month (0 = June, 1 = July, 2 = August) and the column indicates the number of days in each month.
Now I need to create a function that creates a report and displays, for each month AND for the whole 3 month period:
1) The number of rainy days
2) The number of cloudy days
3) The number of sunny days
4) Which of the 3 months had the largest number of rainy days
Here is my code so far:
#include <iostream>
#include <fstream>
#include <string>
using namespace std;
const int MONTHS = 3;//Number of months
[Code] .....
There are no compiling errors, but I am not getting the data I want. My rCount and cCount variables end up being 0, and my sCount variable is 90.
I'm supposed to read a text file and display it in the output. I have it down except my formatting. I just cannot get it to just skip one line rather than multiple. I know why though because my char has a max of 11 and if I put a character lets say mango, it is going to fill in the rest with white spaces. It's supposed to display like this:
Mango
Strawberry
Grapes
But instead I get something like this
Mango
Melon
Grapes
I am using isspace but it's not working.
//source code
#include <iostream>
#include <iomanip>
#include <cstdlib>
#include <cmath>
#include <fstream>
using namespace std;
class CFile
[Code] ....
works fine without the for loop.... if i use for loop...it doesnt give the output...
Code: #include<iostream>
#include<conio.h>
#include<fstream>
[Code]....
A company uses two text files: one to store employees' details and another to log their sign in/out time.
The details file - called details.txt" has the following format: ID, Name, Date of Birth, SSN, Department, Position - separated by spaces.
An extract from the file looks like this:
10 alice 4/23/1972 123-45-6789 support assistant
3 bob 6/7/1980 111-12-1134 logistics manager
1 carol 10/2/1963 987-123-1143 admin ceo
2 dave 10/3/1974 902-22-8914 admin cfo
17 erin 6/13/1991 126-83-1942 technology supervisor
15 frank 2/22/1987 303-12-1122 logistics assistant
"timelog.txt" contains daily logs of when employees arrive and leave. It has the following format: ID, Date, Arrival Time, Departure Time - separated by spaces. An extract from the file looks like this:
10 2/11 0900 1700
3 2/11 0930 1730
1 2/11 1100 2000
2 2/11 1000 1530
17 2/11 0900 1700
10 2/12 1000 1830
3 2/12 0930 1730
1 2/12 1100 1900
2 2/12 1030 2000
17 2/12 0900 1700
15 2/12 1100 1600
I have to write a program that searches for specific records using some search parameter, and displays them. Ok first i have to read the data from the files and store them. this is what i have so far....
#include <iostream> //Accesses libaries for console input and output
#include <fstream> //Needed to access the fstream object to read files
#include <string> //Needed to access the string class
#include <cstdlib>
[Code] ....
I know my class and array code is totally wrong i dont know how to store the data for the info is in integer and string form... do i use strings, arrays?
I was wondering if it's possible to display output message without using console.write or any console function
View 7 Replies View RelatedCode:
Real x = (arg.state.X.abs - mViewport->getActualLeft())/float(mViewport->getActualWidth());
Real y = (arg.state.Y.abs - mViewport->getActualTop())/float(mViewport->getActualHeight());
_trace("%f %f
", x,y);
Code:
#include <Windows.h>
#ifdef _DEBUG
bool _trace(TCHAR *format, ...) {
TCHAR buffer[1000];
[Code] .....
Results:
f f
f f
f f
f f
How to display the actual values in the console?
I have this code in order to make a RPN calculator,but im trying to read from the console entering the expression in reverse polish notation,Also I think it will be better to use fgets() instead of scanf since the person can entere something like this 3 2 1 + x
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <ctype.h>
[Code].....
I have been struggling to read a certificate in windows store from C++ DLL, but its not happening. from console application I can but when same code built as a DLL and tried to access from a separate console application. I think its not going to windows store to read the cert.
pCertContext = CertFindCertificateInStore((HCERTSTORE)*pCertStore, X509_ASN_ENCODING | PKCS_7_ASN_ENCODING, 0, CERT_FIND_ISSUER_OF, operator PCCERT_CONTEXT(), pCertContext);
int Error = GetLastError();
if (Error == 0)
LINFO << "
Signtuare is valid
";
else
LINFO << std::hex << Error << '
' << "GetLastErrorStdStr=
" << GetLastErrorStdStr();
it returns 80092004 GetLastErrorStdStr= C a n n o t f i n d o b j e c.
I want it to read 5 cards then display a text value
Code:
#include <stdio.h>
int main( void ) {
char inputtedhand[25];
[Code]....
What I need to do Is constantly read the cpu percentage and display it to a textbox, but the issue is I am using the windows form not the console so I cant use a while loop. I think my best bet is to use an event, but I am not sure how.
View 6 Replies View RelatedProgram to read in 15 numbers and display them as follows //each number on a separate line
Code:
# include <stdio.h>
# define MY_ARRAY 15
int main(){
int i ;
printf("please enter 15 numbers
[Code] ....
Error that i get from compiler:
Error E2062 array1.c 14: Invalid indirection in function main()
Error E2062 array1.c 19: Invalid indirection in function main()
both pointing to the separate "scanf"
I'm trying to code a program to read the user's input and have it:
-count vowels
-stop counting vowels after '.' or '?' (ie. abcdjwef is 1 a, 1 e; while fje.fwdfeiii is just 1 e)
-closes when ENTER is pressed after a '.' or '?' is found (ie. closes after 'abacds. ENTER' as well as 'as.fefsdf ENTER')
-display the number of vowels
Is there any way to do this with only 'cin >> userInput' and a while loop checking for punctuation?
I am writing a music program that will read (from a separate file) a guitar chord and display it to the the user. The format of the separate text file is as follows:
A
|--0--|
|--2--|
|--2--|
|--2--|
|--0--|
|--x--|
B
|--2--|
|--4--|
|--4--|
|--4--|
|--2--|
|--x--|
C
|--0--|
|--1--|
|--0--|
|--2--|
|--3--|
|--3--|
etc...
I want the user to be able to search for a specific chord in the file and how I can make that happen.
#include <iostream>
#include <fstream>
#include <string>
#include <cstdlib>
using namespace std;
[Code] .....
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] ....
Convert this code into one where you can input the file directory from the console?
#define WIN32_LEAN_AND_MEAN // prevent windows.h from including "kitchen sink"
#include <windows.h>
#include <iostream>
#include <string>
using namespace std;
int main()
{LPCSTR Application = "C:Program FilesWindows Media Playerwmplayer.exe";
// Media file extension must be provided
// Paths are quoted
[Code] ....
This code works but the directory can only be changed from the code not the console.
I am stuck in visual studio 2010 file I/O ... i placed file1 file2 using the following program under VS2010/projects/projectname/file, file1 and also in debug also once......I am actually using cmd line arguments in debug mode
Code:
// feof files.cpp : Defines the entry point for the console application.
//
#include "stdafx.h"
#include<stdio.h>
#include<stdlib.h>
#include<conio.h>
int main(int argc, char* argv[])
[Code] ....
I dont think in C++ forum the printf will do any problem...when i run the program it says "cannot open source file" and a window appears saying"Debug assertion failed"....and other details such as Expressionstream!=NULL).perror
Having some trouble with an assignment. Here is the prompt. Write a program that reads the telephone.dat file and displays its contents on the console. The program should allow the user to add new entries to the file.
I have saved the file into a resource file within visual studio and I am trying to run the code to where the file will be shown when I run the program. I know that the program is running and the file is there because if i misspell the filename it will give me the error message. I don't know how to make the contents of the file display. Here is what I have so far.
#include <iostream>
#include <fstream>
#include <string>
using namespace std;
int main() {
ifstream inputFile;
[Code]...
All I am trying to do is create another source file in a simple Visual Studio C++ console application.
I get the following errors:
intellisense: expected a delcaration
error C2447: "{" missing function header
I didn't create another int main () in this source file, so what is causing these errors.
I am working on a project that uses a web service to extract a PNG image from a web server and save it on a local machine. It's done via a system call. I can get the output of the system call to a FILE but it appears to be losing data, most notably the PNG chunk names (IHDR/PLTE/IDAT/IEND, notably). (Unfortunately piping the output to an exterior file does not work through a system call.) The end result is ~6KB smaller than the file I am intending to retrieve.
This is the code I'm using (adapted from other material I found via searches here):
ofstream png;
png.open(/*outputfile*/, ios::binary);
FILE* fp = _popen(/*SYSTEMCALL*/, "rb");
string responseString;
if(fp != NULL) {
char a[100];
while(!feof(fp)) {
fgets(a, 100, fp);
responseString += a;
}
}
_pclose(fp);
png << responseString;
Am I missing something or just doing it wrong?
How do I output a Unicode number if I extract a character off a console or out of a file.
If I do the below, I use the Unicode number to show a character. The below shows me 25² .
char b = 'u00B2';
mystring = "25";
mystring.append(1,b);
How do you go back the other way? If I extract the 25 and the ² separately, how do I get the unicode number for ² ?