I have a program below that calculates the average, sum, etc of the numbers in a file named "mynumberlist1.txt".
I want to create a loop whereby the program loops through several files; mynumberlist2.txt, mynumberlist3.txt, and calculates the statistics for all relevant files using the calculations below. How would I do this?
#include <iostream>
#include <cmath>
#include <math.h>
[Code].....
I wrote this code but it opens file in its folder Iwant to save in somewhere else. How I could assign path for the files in for loop?
for (double j = 0.5; j < 1.4; j+=0.1) {
s +=1;
stringstream a;
a << j;
filename = "Vzcr_" + a.str();
filename += ".txt";
files.open(filename.c_str(), ios::out);
I would like to do something like this:
for (int i=0; i<5; i ++)
{
for (int j=0; j<5; j++)
{
//* CREATE A NEW FILE FOR WRITING * //
}
}
I don't know how to create a new file that doesn't get overwritten each time the loop runs.
In my program I open two files and write data into each, and close them. this is done in a while loop.
int main() {
while() {
myFile = fopen("file1.txt","w");
myFile2 = fopen("file2.txt","w");
// write data into files using fprintf() in a for loop
fclose(myFile);
fclose(myFile2);
}
}
However, after some iterations the fopen() for myFile2 fails.
Debug assertion failed!
Program....
File ......srcfprintf.c
Line 55
Expression (str != NULL)
I have not been ableto locate the bug in the code that is causing the failure.
I am writing a program to hide files behind other files using Alternate Data Streams in Windows NTFS file systems.
The program is as follows:
Code:
#include <stdio.h>
#include <stdlib.h>
int main(void){
char hostfile[75], hiddenfile[75], hiddenFileName[15] ;
printf("Enter the name(with extension) and path of the file whose behind you want to hide another file: ");
scanf("%75s", hostfile);
[Code]...
The complier is showing error as "Extra Perimeter in call to system" but I am not getting where?
I am writing a piece of code that requires me to display the last 1000 lines from a multiple text files (log files). FYI, I am running on Linux and using g++.
I have a log file from which - if it contains more than 1000 lines, I need to display the last 1000 lines. However, the log file could get rotated. So, in case where the current log file contains less than 1000 lines, I have to go to older log file and display the remaining. For e.g., if log got rotated and new log file contains 20 lines, I have to display the 980 lines from old log file + 20 from current log files.
What is the best way to do this? Even an outline algorithm will work.
When including a header file in stdafx.h, should that file still be included in the source file where it is actually used?
If it is included in both places, is the one in the source file ignored?
We are making a program--but every time we input a value for scanf, the following for loop does not work and the program quits without displaying the for loop's function. We are not getting any errors.
View 11 Replies View RelatedI have tried to submit this topic before but i didn't submit my whole code and it was removed. So here it is. All I am trying to do is load form2 from form1 then back to form1 from form2 for a certain number of times the get out of the loop. I am new to C-Sharp and it seems as though I cant seem to figure out a way to do this.
Here is form1 and form2 code. I have commented out a few things I have tried.
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
[Code]....
Code:
#include <stdio.h>
#include<ctype.h>
void try5t(){
char choice;
int choiceint;
[Code] .....
Loop is repeated an additional time as shown in the screenshot:
Given a for loop:
int i;
for(i = 0; i < 1000; i++)
;
How many nanoseconds, or microseconds or milliseconds does it take for each iteration? And why do some use it as a timer mechanism?
I already made a nested for loop into a while loop (below this) and now I'm trying to make the outer for loop into a do while loop, but it's not working.
#include <iostream>
using namespace std;
int main () {
int len;
int j;
int i;
[Code]....
And I can't make this code do the same thing. It stops after one loop, instead of continuing to the end. Why won't the loops continue?
#include <iostream>
using namespace std;
int main(){
int len;
cout << "Enter a number: ";
[Code] ....
I need to convert the following while loop:
count = 1;
while (caloriesForItem != 0, count != numberOfItems )
{
cout<<"Enter the calories: ";
cin >> caloriesForItem;
totalCalories += caloriesForItem;
count++;
}
This is what I have come up with:
totalCalories += caloriesForItem;
for (count = 1; caloriesForItem != 0; count != numberOfItems)
{
cout<<"Enter the calories: ";
cin >> caloriesForItem;
count++;
cout << "Total calories eaten today = " << totalCalories << endl;
}
However the output is not the same?
How do I read a .pdf file using C++? When I try to open it using myfile.open ("example.pdf"); but all I see is some Crazy Symbols. Is there any way to open ?
View 3 Replies View RelatedI need a program that can compare two xml files for equivalency using any XML Parser.
View 2 Replies View RelatedAssignment: Write a program that merges the numbers in two files and writes all the numbers into a third file. your program takes input from two different files and writes it output to a third file. Each input file contains a list of numbers of type int in sorted order from the smallest to largest. after the program is run, the output file will contain all the numbers in the two input files in one longer list in sorted order from smallest to largest. your program should define a function that is called with the two input - file streams and the out - put file stream as three arguments.
Okay, here is my code.
#include<iostream>
#include<fstream>
using namespace std;
int main() {
int list1[25];//array for the first list
int list2[25];//array for the second list
[Code] .....
I'm confused about where the two files (which contain lists of numbers) need to be placed in order to be read and if they need to be renamed or something.
I want to know if you can run bat files from code? If so how else how can you shutdown a computer with code? OS is windows 7.
View 2 Replies View RelatedSo I am awful when having to use data or .txt files. I believe my code is right, I just don't know how to upload the files. Here is the description of the assignment and the coding:
Process the input file containing latitude and longitude data of US cities in degree, minutes, and seconds. Output the processed information in decimal degrees.
a) Write a C++ program to read each line of the input file, store each data line in an array of structure, calculate the degrees in decimal for latitude and longitude, store these values in the corresponding structure and write the results to the output file by processing the array.
b) Use vectors or dynamic array to optimize memory usage. Specify the design choice in your main comment for the program.
c) Split the City and State and store it in two separate fields.
d) Search a city and find it in the array of structure and print out ALL the information on the screen.
#include <fstream>
#include <iostream>
#include <iomanip>
#include <vector>
#include <string>
#include <algorithm>
using namespace std;
struct City
[Code]...
I'm using maps and writing files for the first time and I get a crazy compiler error when I try to compile the following code.
//map is named schedules
// saveSchedule() is a member of the Schedule class that writes a vector of objects to disk, or is supposed to
ofstream newFile("sched.txt");
map<string,Schedule>::iterator in;
[Code] .....
I don't have in depth code or anything. I tried this but can't seem to wrap my head around it.
Code: //header.h
namespace test {
int arr[5];
[Code] ....
Also tried putting int arr[5] in a Test class within test.h.
I have 2 structs in another file, the main, and want to make an instance of the arr variable, in a separate header, for each.
I have a text file that contains values as follows:
2013 05 27 15 52 02.049824 231.401 0.022 49.738 2013 05 27 15 52 02.668822 229.814 0.019 49.738 2013 05 27 15 52 03.283705 228.528 2.599 49.726 2013 05 27 15 52 03.898469 230.140 2.576 49.751
Column1=date, Column2=Month, Column3=Day, Column4=Hour, Column5=Minute, Column6=Seconds, Column7=Voltage(Vrms), Column8=Current(Irms), Column9=Frequency(Hz).
I have to develop a program that will analyse these time-sampled voltage and current measurements over 24 hours and find the total energy used, mean and peak power consumption and Energy used over each hour of the 24 hour period.
How do I go about doing this? I also need to include at least one numerical integration technique. The file data contains over 50 thousand lines in the format mentioned above.
I am trying to learn about parallel arrays and files. I believe that I wrote a program that properly writes the data of the arrays into a file, but I am not quite sure how to take the next step and make a second program by bringing in the file I created and reading the information of the file back into two arrays to display them.
Code:
#include<iostream>
#include<fstream>
#include<string>
usingnamespace std;
[Code] ....
I would like to make a program that automatically launches and loads a file when a file of that file type is double clicked within windows. As said I am unsure where to look for some information as to how to do that, and so turn to you all. Is there a simple way of doing such a thing without using any external libraries, if so, a simple tutorial or link to a reference for this; if there is no way of doing this without externals what would be a small and simple to use library for this?
View 2 Replies View RelatedI have created a project in netbeans 7.2 and have not modified any setting. I have used all sorts of methods I could think/find but the code can not find the file.
I have placed my test.txt file in the folder of the project. Here is the location of the file:
C:UsersSAMARASDocumentsNetBeansProjects
eadFi le
However, I could not use it without modifying it as an absolute path.
For example, check the code from the FAQ. //well the return 0; is missing but this is not the problem now.
Or for example this code Code: bad code or with Code: myReadFile.open("C:/Users/SAMARAS/Documents/NetBeansProjects eadFile est.txt"); I have tried many things for placing the slashes, but could not find the file.
i am new to c . is it possible to upload and navigate files in c . Any sample program.
View 5 Replies View RelatedI'm writing a program to merge all .txt files in a directory. I had the code working and then made small change. It started crashing and I couldn't get it back to working.
Code:
#include <stdio.h>
#include <stdlib.h>
#include <dirent.h>
#include <unistd.h>
#include <string.h>
#include <sys/stat.h>
[Code] ....
It's crashing around the
Code: while(!feof(in)){ .
If I comment that section out, the code still works. But, I know that portion of the code works to copy text from one file to another! It's actually from the Schildt complete C reference and I have tested it several times on it's own.