I'm getting this when I compile my program. Then, when the program runs I get an error. I assume it is because I have the warning for this problem. How can get around this error.
warning C4172: returning address of local variable or temporary
Code:
#include <iostream>
#include <cstring>
using namespace std;
[Code]....
Suppose I have read a line from an ASCII file with fgets(). Now I want to parse the line, which looks something like this: Code: # John Q. Public et al. 2014, to be submitted The name, "John Q. Public" is what I want. However, the name can be anything, consisting of 1 or more tokens separated by spaces. it could be "John" Or "John Public", or "Thurston Howell the 3rd", or etc... Bascially, I need to get the entire substring between the first hash mark, and the "et al" in the line. I tried this: Code: sscanf(line,"# %s et al.",name); But I can only get the first token (which, in this case, is "John").
View 2 Replies View RelatedI have to make a c++ program, in which with an algorithm I have to code a text from a file and write it to another file. The input should like this: "code forCoding.txt toBeWritten.txt" ; or like this: "decode toBeReadFor.txt toBeWrittenIn". I have done everything except one thig: It is says I have to be able to input parameter.
How should i write this? I read [URL] ....., but still dont get. The input of my program has to have 3 strings, so I guess argc should be 3, but I dont really get it. What should I have in my main about this parsing command line parameters?
my professor just increased the problem by saying the time value should be passed as command line arguments can anybdy tell the code to parse time as command line arguments
View 10 Replies View Relatedparsing integers and characters in same line.
I trying to parse g8,7.
{
token = strtok(NULL, ",");
token2 = strtok(NULL, "g");
}
I am trying to make 8 an integer so that i get two integers 8 and 7.
I already know how to get 7, but every time i do it i get (0,7) instead of (8,7).
I am trying to create program which will process command line arguments and define which functions should be run, with specific order and specific arguments. This is my first problem:
Code:
// proccessing_args.cpp : Defines the entry point for the console application.
//
#include "stdafx.h"
#include <vector>
#include <string>
#include <iostream>
#include <conio.h>
using namespace std;
int _tmain(int argc, _TCHAR* argv[])
[Code] ....
proccessing_argsproccessing_args.cpp(20): error C2143: syntax error : missing ',' before ':'
refers to the line with for. I copied the code form here [URL] .....
I wrote this code to search words in the file and display if the program found the word or not. when i write the words in the file on the same line (without the endl) like this :
w_toFile << "gilbert";
w_toFile << "lara";
w_toFile << "rana";
i can search any word.
but when i write them with the endl, the program can find only the first word. what can i do to make the program find any word even if they are each on a line?
here is the full code:
#include <iostream>
#include <windows.h>
#include <fstream>
#include <string>
using namespace std;
int main (void) {
string wordsearch;
[Code] ....
I was loaded a bmp file in my mfc window and stored rgb data in a file.My image size is 320x240.
Is possible to pick a single point (location) from that bmp image (Not the whole window)?
i like to plot a line graph using the pointed single line data using the stored file data?
here R is X Axis and G & B is Y Axis.
If i have 2D array of data means how can i plot the line graph?
I am trying to write a program that counts specific words that a user inputs "Howdy/howdy/Whoop/whoop" (yes I go to Texas A&M, hence those specific words) I am having an issue where it wont count the first word even if it is "Howdy"
For example if I put it:
"Howdy howdy whoop Whoop" - it only outputs that it counted 3 words
now if I were to do:
"Hello Howdy howdy whoop Whoop" - it would count 4.
Code:
#include "std_lib_facilities_4.h"
int main(){
cout << "Please enter desired words, when you have entered all words, please type CTRL+d (EOF Command)
" << endl;
//It was assumed that EOF command was going to be used here hence the necessity of 'CTRL+d'
vector<string>words;
[Code] ...
My program , it says there is no problem with the build but when exe. it displays a bunch of backward 'k' instead of reversing the words entered.
Problem: Enter in a C-string and use function to display the word backward. (it might work with a pointer but I am not sure how to go about it)
lab10_p2.cpp
I have written below program to count number of words and lines and print the all the words.
#include <iostream>
using namespace std;
#include<fstream>
#include<string.h>
int main() {
ofstream outfile;
[Code] .....
Its compiling fine but when executed its displaying I infinite times...
I have been given an assignment to make a code to read some text nd display all the words nd the number of times they appear in another file or as output without displaying the repeating words. I made the code but its not giving any output.
#include<iostream>
#include<conio.h>
#include<fstream>
#include<string>
using namespace std;
void read(string);
string x,z,w;
[Code] ....
I was reading this earlier [URL] ..... and I was trying to figure out how to pick one of the words randomly from my text instead of using all the words in it.
View 4 Replies View RelatedHow can a mulitline string be read line by line
ex: str = "PERIOD="week"
DAY="day"
TIME="time"";
i am trying to do a button with red line around it, i don't know exactly how do it.
i am understanding i need to take the DC with GetDC and i have to use a pen, but i cannot see any red line.
I want to read a file and replace a particular line in a file.
Ex:
temp.txt file contains below
FilePath1: xxxxxxxxxxxxxxxxxxxxxxxxx
FilePath2: xxxxxxxxxxxxxxxxxxxxxxxxx
FilePath3: xxxxxxxxxxxxxxxxxxxxxxxxx
Mode: 1
Here My requirement is replace the 4th line Mode: 2 instead of Mode: 1.
I was used seek method like below,
Code:
CStdioFile SaveFile;
CString strFilePath;
strFilePath = _T("C:Sara emp.txt");
if (SaveFile.Open(strFilePath, CFile::modeCreate | CFile::modeNoTruncate | CFile::modeReadWrite), &fileException) {
[Code] ....
The above code not working correctly.
i got 2 arrays, how would i print 10 numbers per line, so that would be 5 numbers from each array.
array1[40];
array2[40];
array1 array2// array1 array2// array1 array2 // array1 array2 // array1 array2
array1 array2// array1 array2// array1 array2 // array1 array2 // array1 array2
array1 array2// array1 array2// array1 array2 // array1 array2 // array1 array2
...... and so on
how can i put this in a loop?
and so on but there are 80 elements so i cant go one by one.
Code:
/** Add a feature to a (mutable) LV2 feature array. */
static inline void
suil_add_feature(LV2_Feature*** features,
unsigned* n,
const char* uri,
void* data) {
for (unsigned i = 0; i < *n && (*features)[i]; ++i) {
if (!strcmp((*features)[i]->URI, uri)) {
[Code] ....
suil_add_feature is used to add features to an existing array of pointers to type LV2_Feature. Initially, the array gets searched to see if the feature already exists. If it doesn't, the existing array gets increased by one element which then gets initialized to the new LV2_Feature value. Resizing is done using realloc()
I'm having a problem when I build a Debug version. The first 5 times I call suil_add_feature() realloc() ends up calling _realloc_dbg() (in dbgheap.c) and everything works fine. But on the sixth call, realloc() calls _realloc_base() (in realloc.c) which brings everything crashing down. I assume that _realloc_base() is intended for the normal (non-debug heap). So this particular app is somehow linking to both the debug and non-debug runtime modules.
If I was building using the VS IDE I could probably figure this out - but although my compiler is MSVC, my build environment is waf, which I'm a bit unfamiliar with. I'm guessing I need to add some lines to my waf script to let it know that it shuld ignore the non-debug runtime libraries when building a Debug version.
Can I achieve this by adding /NODEFAULTLIB to the linker options or is it more complicated than that?
Any good algorithm for calculating the closest points/distance between two line segments? I use some pretty general code: [URL] ....
which seems widely used and advertized on the web and works in most cases but seems to often fail horribly when line segments are nearly parallel. I've been messing with the SMALL_NUM value for division overflow to no avail. The calculated distance can still vary widely when nearly parallel.
I managed to isolate a specific incident where this happens in my code. The distance between segments P1P2 and Q1Q2 changed abruptly in one timestep from 1.05 mm to 0.90 mm (yarn radius = 1 mm), causing abrupt compression spikes. In reality the distance in the original timestep is definitely also around 0.90 mm but is not calculated as such. I find that the values of s and t (s=0 for P1, 1 for P2, t=0 for Q1, 1 for Q2) for the closest points are originally 0 and 0 (as well as in the previous time steps) and then change abruptly to 0 and around 0.29 in the new time step. What it should be, I still need to check out.
P1 = (0.012711 ,-0.000688 ,-0.001097);
P2 = (0.012895 ,-0.000686 ,-0.001133);
Q1 = (0.012676 ,-0.000689 ,-0.000999);
Q2 = (0.012859 ,-0.000687 ,-0.001034);
P1new = (0.012712, -0.000689, -0.001095);
P2new = (0.012895, -0.000687, -0.001131);
Q1new = (0.012676, -0.000690, -0.000996);
Q2new = (0.012859, -0.000688, -0.001032);
Results when calculating self contact of 15000 line segments in a few tens of fibers, one big mess:
Any better algorithm/corrections?
I want to read sentence from command line. I open some program which run in command line and I have to wait for that program process. So , I don't know when process success .I can't type next command if can't read sentence from command. I use
Code:
wprintf(GetCommandLine());
but it show
"C:UsersPKRUdocumentsvisual studio 2010ProjectsVirus ScanDebugMyProgram
How to read sentence from Command line with MFC?
I've spent some time trying to performance test various methods of loading / accessing a file, either into memory or through a memory mapped file, but I am having some trouble.
FILE * pFile;
std::ifstream ifs;
MapViewOfFile
I'm have trouble because Windows appears to cache the file, so I am getting very mixed results. Sometimes a huge file (100's MB's) will load quickly, other times almost instantly.
How to stop Windows from doing whatever it's doing, so I can see the real time taken to load/access a file from disk?
My program allow user to draw lines and the user should know the length of the line that he draw in centimeter (.cm)
I did use
SetMapMode(MM_LOMETRIC) function to convert the device units into logical units
and it works correctly but I don't know how the line length will appear to the user to let him draw in correct length
I think to make the length appear on the mouse when the user draw but I don't know how I calculate and display it.
I have a text file name fruit.txt that contains the following information of fruit id, fruitName and fruitQuantity.
Code:
1:pear:30
2:apple:20
3:banana:24
4:orange:15
5:watermelon:35
If let's say I key in 2, it will search for the id=2 and delete the whole line and the id of banana which is orignially 3, will become 2 and orange which is orignally 4 will become 3 etc.
I researched on how it can be done and most suggested to put inside a vector and fout the line.
I know how to put the values in the vector but how should I go about searching for the id and if the id is found it will delete that line inside the file.
Code:
ofstream fout;
ifstream readFile("fruit.txt");
while (getline(readFile, line)) {
[Code]....
I am suppose to make a program that will output a line for a specific age group,but everytime I execute the exe file it gives me the desired line and also the last line included everytime.Where did I go wrong with it including the last line everytime?
#include <iostream>
using namespace std;
int main() {
double age;
cout<<"Enter your age:";
cin>>age;
if (0<age && age <6)
[Code] ......
Actually the below program is for Dispersal Algorithm called Rabin-IDA; this algorithm divided the data into N pieces and then recombine it from M pieces (such that M<N).
Thus, the below program needs command line arguments,which entering by Project properties/Debugging. this argument is file name, where the program performing spitted the file into N files, and then recombine it from M divided files, and put it on another file which should also passing its name as argument .
Now my question is, How can i make this program enter the file name by keyboard??(i mean enter the files name by user from screen not as command line arguments) ... In another word, How I can exchange ?
Code:
argc == 3
and
Code:
argc == 2
To enter file name ? i mean what i should do to in
Code:
rabin.split(argv[1])
To pass my file name by use keyboard not Project properties/Debugging?)
the below code is just the main function of program, and the whole of it in this link [URL] .... Information Dispersal Algorithms Rabin-IDA.
Code:
#include "include.h"
void __cdecl _tmain(int argc, TCHAR *argv[]) {
DWORD ini=GetTickCount();
try {
if( argc == 3 ) //recombine
[Code] ....
I know I should use getline() function but how exchange argv[] ?
this is my C# code
System.IO.Directory.SetCurrentDirectory
("C:/Users/fahime/Documents/Visual Studio 2010/WebSites/MyWebSite/UserFiles/ProblemAnswers/");
Process.Start("cmd.exe", @"/k ""C:Program Files (x86)Microsoft Visual Studio 10.0VCvcvarsall.bat"" x86");
[Code] .....
I want to compile my cpp code file with visual studio cmd
