C++ :: Cerr Causes Program To Hang
Dec 3, 2013
I'm trying to run this on linux, and for some strange reason, one of the statements in the following code snippet does not execute to completion:
Code:
if (doneComparisons % 10 == 0 && verbose) {
cerr << "
" << (int)(doneComparisons / totalComparisons * 100) << "% of event pairs checked";
cerr.flush();
}
when (int)(doneComparisons / totalComparisons * 100) evaluates to 54, the code never reaches the cerr.flush() statement. The statement does evaluate if cerr is replaced with cout.
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Oct 30, 2013
Other than the theoretical difference between cout and cerr where the former puts values to the monitor and the latter puts values related to errors to the monitor, is there any real difference here? Why not use cout when you want to send anything to monitor? Why use cerr at all?
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Nov 7, 2012
I have written a windows service which run continuously on a server. Interval time is 9 sec. On timer1_interval i am fecthing record from database and sending it to user. And changing its record status.
this service stop fetching records after running 4 to 5 days. We need to restart the service. there is no GUI involve in this code
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May 11, 2013
I am having problems at the end of the program with the do-while loop to restart the program and the validation.
#include <iostream>
#include <string>
#include <iomanip>
#include <cstdlib>
#include <time.h>
using namespace std;
[code]....
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Mar 10, 2014
so my homework assignment is to make a program of which removes any notes in a program file.
for example, you run my program it will ask for a filename, when entered it opens the file, copies everything in it and removes any double forward slashes (//) and anything after that up to the new line character ( ) and anything between /* and */ including the /* and */.
i created the entire program and it removed the // and anything after that up to the new line character but will not remove anything after the first / when it finds a /*. This includes the */ at the end of the comment.
the section of code that removes the comments is
//this loop removes all notes
for(i=0;i<buf.st_size;i++) {
if((filecontent[i]=='/')&&(filecontent[i+1]=='/'))//removes notes using //
{
for(i=i;filecontent[i]!='
';i++)
filecontent[i]=' ';}
[Code]....
i know that the section that removes the multi line comments would not remove the final */ at the end if it did work, i was planning to fix that later once it removed the comment.
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May 15, 2014
I have my program to load info about students from .txt file
Mrkvicka Jozef 2 1.75 2.1 0.4 1 0.49 1.27
Hrasko Jan 0.1 0.38 1 1.2
Mladek Peter 1.6 0.4 2 1.3 1.8
Petrzlen Robert 0.6 0 1.1 1.1 0.6 0.59
Horvath Ivan 1.6 0.8 0.7 1.3 1
My program is ruuning perfectly only problem is that i must transform it to program uses class, class student . Am very beginer in using classes, so far i do very easy programs using classes.
so far i have this
#include "stdafx.h"
#include "student.h"
student::student(vector<STUDENT> studenti) {
vStudent=studenti;
[Code] ....
I try to make it but its too difficult for me. in that student.h and student .cpp is 50 errors..
Here is my code
#include "stdafx.h"
#include <string>
#include <vector>
#include <sstream>
#include <iostream>
#include <fstream>
using namespace std;
[Code] ....
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Jul 22, 2014
I want to make a program which can run in another program. My program have structures flowing:
while (1) {
check (keypressed);
{
do something;
}
}
But check(keypressed) function only active in my program, It can't run in another program.
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Sep 4, 2013
I've been working on a small SDL program and decided I wanted to throw the program on to a disc so I could show some people what I'm working on. However, when I try to run the executable, the program crashes and under more details it says that the fault lies on SDL2_ttf.dll .
Why does this program work inside of VS2012e and not in windows?
What I did :
Set the program to release, hit f6, and then tried to run the executable from windows.
Additional information :
Compiler : Visual Studio 2012 express
O/S : Windows 7 64bit
SDL lib : 32 bit version
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Aug 27, 2013
For instance Code: int counter;
counter =0;
FILE *pfile;
pfile= fopen("g:myprog.txt" "w");
while (counter >100)
{ fprintf (case counter{something})}; how do I do this?
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Mar 20, 2013
Cannot divide the real output of the AVERAGE.:
Code:
#include<stdio.h>
#include<conio.h>
struct student
{
char Name[50];
[Code]....
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Dec 8, 2013
how to get the output of this program.. I'm not completely lost but I need it in the simplest terms.
Code:
/*Recursive Trace
Written by Ron
April 2006
*/
[Code]....
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Feb 1, 2013
is there anyway to have a program where it ask for three numbers and you shows which which number is the largest and which is the smallest, e.g.
Enter 1st number: 30
Enter 2nd number: 10
Enter 3rd number: 30
Largest = 30
Smallest = 10
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Oct 16, 2014
I am working on a program to compute the natural log of numbers using several different methods, but I am having a couple of issues. Firstly, when using Borchardt's Algorithm I almost always end up with nan as a result, even though I am pretty sure I got the formula correct. Also, in my lnDemo.c file It doesnt give me the correct answer and the second time around I get a segmentation fault.
Code:
//myLog.h-------------------------------------------------------
//These functions will compute or aproximate the natural log of a number
//This method will use a formula to compute it
int lnFormula(double x, int m,double *result);
[code]....
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Feb 26, 2014
I have written the below code,
#include "stdio.h"
int main() {
int c;
while((c=getchar()) != EOF) {
putchar(c);
}
}
The above program is not terminated.how to terminate it?
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Mar 5, 2014
Is it possible to add more than one database in a C# program if so, how?
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Mar 6, 2015
I'va create a c program that scans the web from a root it works on mypc but dont works on another pc of my friend.I have created this project with Visual Studio 2013 disabling extension to obtain standard ansi c project.
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Jul 2, 2013
I have an issue with a switch case in my program. I execute it and it does fine all the way up to where it says, "Answer (1, 2, or 3): ". When I enter 1, 2, or 3, it gives me' "Not an input choice!" from the default of the switch case.
NOTE: I use Code::Blocks on Windows XP.
Here is the code:
Code:
#include <stdio.h>
#include <string.h>
int main() {
[Code].....
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Mar 20, 2014
Can we use more than one 'if' subroutine in one program. I am trying to implement this but if I run the two subroutines at the same time the lower subroutine directly shows "invalid grade". But if I run one at a time then they work perfectly fine.
Why is this happening? Does the compiler think that its the same "if" routine. If so how do I segregate it???
Code:
printf("Enter a score:");
scanf("%d",&gr);
if(gr>=80 && gr<=100)
printf("A Grade
");
if (gr>=60 && gr<80)
printf("B Grade
[Code] ....
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Mar 9, 2013
I expected this program to print out:
Code: Enter your desired monthly salary: $2000___
Gee! $2000.00 a month is $24000.00 a year. Instead, it printed out:
Code: Enter your desired monthly salary: $2000___
Gee! $2000.00 a month is $24000.00 a year. I don't understand how it got the extra nextline in the middle.
Here is the code:
Code:
#include <stdio.h>
int main(void) {
float salary;
printf("aEnter your desired monthly salary:");
[Code].....
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Oct 7, 2013
I'm trying to successfully run a program that calculates your BMI but, although it runs, it is not giving the the correct math. Instead, it gives me the number i've submitted as my weight as an answer. I'm using Visual Studio 2008 and the formula: weight / (height/100)*2
Here is my code
#include <iostream>
#include <cmath>
using namespace std;
int main() {
int weight;
int height;
double BMI;
[Code] ....
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Dec 20, 2013
Basically i am really close (i think) and the numbers im getting when i run it are weird like for instance i should get back a one if i enter in I or i but instead im getting like 178976087.
MAIN:
#include "stdafx.h"
#include "iostream"
#include <iomanip>
#include "romanType.h"
using namespace std;
int main() {
romanType r;
[Code] .....
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Feb 26, 2013
Why isn't this program working?
#include<iostream.h>
#include<conio.h>
void main() {
clrscr();
int n;
float x, t, sum=0;
[Code] ......
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Mar 20, 2013
"Allow the user to enter an integer, between 1 to 9 only. You may use the value ‘0’ to terminate the program. Then display the output as follows:
Sample Run 1
Enter an integer (1-9):4
1
121
12321
1234321
Sample Run 2
Enter an integer (1-9): 20
You have entered an invalid entry, please try again.
Enter an integer (1-9): 0
(Try to use remark to explain function and process area)
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Jul 23, 2014
after you have compiled a program can you run it without an IDE?
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Aug 13, 2014
In this program the intention is to create a menu driven program for a pizza restaurant. I have to use a class called Pizza and have to include at least three public functions; one is called SetSize, another one is called Display, and the last one is called ComputePrice. A small pizza is worth $10, a medium is $14, and a large is $17. Each topping is worth 2 dollars. I know that the program runs correctly, but I have doubts over the classes and function actually being utilized correctly or at all.
Program:
#include <iostream>
#include <iomanip>
#include <cmath>
using namespace std;
class Pizza {
private:
int size;
int style;
[Code] .....
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Jan 12, 2015
I originally had the user input three different lengths and then used this to determine whether or not it was a right triangle.
if(c==sqrt(a*a+b*b)||a==sqrt(b*b+c*c)||b=sqrt(a*a+b*b))
Now it has to be modified in order to accept the input 2,2 4,4 and 6,8(only an example) and be able to find out if it is a right triangle. I was told that arrays were not necessarily the only way to go about it.
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