General C++ Programming - November 2009 (Page 4)

by homecheese101
C++ Syntax Error Issue
 
Hello all, I am new to C++ and I need a little help. I am debugging some code I wrote, and I get the following error: Error: String literal syntax error...
[5 replies] Last: I thought I had poured over all the code countless times, and as I wen... (by homecheese101)
by n4nature
time delay measurement
 
Hi, Does anyone know of any tool that would measure the time spent in a C++ program? I need the measurement-granularity of upto each line, and not each funct...
[1 reply] : The functions from ctime should help you: http://www.cplusplus.com/ref... (by Bazzy)
by babe20042004
Printing contents of an input file to the screen
 
My program is supposed to read from this output file and print the contents to the screen NOTHING IS BEING PRINTED: CPTR151‐01 000143 Doe John Q 10 5 ...
[2 replies] Last: The problem is that the output wont print to the screen. When compiled... (by babe20042004)
by The Parasite
Matrix recursion
 
Greetings everyone! I need to make a recursive funktion for matrix inversion, and was wondering if anyone here could help me? The matrix should be added as an...
[1 reply] : Post your code please. (by Zhuge)
by babe20042004
My Program Wont append
 
#include <iostream> #include <fstream> using namespace std; int main() { int num=0; int tot=0; ofstream myfile; myfile.open("payroll.txt"); ...
[2 replies] Last: Thanks! Such a simple error! (by babe20042004)
by beavisbeast
Arrays and Strings
 
I need to write a program using arrays and strings.Here is the question. A class of students takes a 20 question multiple-choice exam;each question has 5 choic...
[1 reply] : Please declare student_count in your program... There is no declarati... (by chakde)
by strongdevil
Convert from FILE to fstream and vice versus
 
Dear everyone, I am writing a C++ program and using fstream(ifstream and ofstream). Additionally, I am using a C open source library and its methods require...
[2 replies] Last: Thanks helios. If so, is there any similar function in Linux? Or is... (by strongdevil)
by funny
how to re-write each line in text file easily way
 
hi, im trying to make a function which could (in for statmnt) read format from file, delete same line and write there data from stdin... i was thinking how t...
[4 replies] Last: does he have to close the file before opening it again for writing on ... (by herbert1910)
by Matt23488
Runtime error #2 Yahtzee program
 
I am in the process of writing a little Yahtzee program out of boredom. However, I have stumbled upon a little error that I cannot seem to solve. I used an inte...
[5 replies] Last: Ok, I've used std::getline() before, when trying to get strings as inp... (by Matt23488)
by poonninja
planitary motion
 
i wan to make a program that will simulate the earth orbiting the sun. i have all the opengl experience i just don't get the physics behind it. can anyone help ...
[6 replies] Last: [quote=helios]Or unless the camera is behind the Earth, with the Sun i... (by Duthomhas)
by closed account S6k9GNh0
Why integer booleans?
 
I find that many people redefine integers to be booleans. As a boolean can easily be represented as a single bit with 0 or 1, I cannot help but not understand t...
[8 replies] Last: char myChar = 'h'; myChar is 1 byte. char myChar = "abcdefgh... (by Kangaroux)
by wany
Using current sytem time in program
 
Programming language c++ I have this project and what i have to do is get the current system time (which i alreayd know to do ) get a user input start time and...
[no replies]
by mamo139
[c/c++] video library...
 
hi everybody!! i would like to write a program that can open, show and modify a video. actually at the beginning it would be enough to me also beeing able to ...
[12 replies] Last: calm down guys, please... I did not specify the OS, so i think both... (by mamo139)
by jdcnosse
cin.getline for int, or cin for strings?
 
Okay, so I'm supposed to be writing a program that will take data in from the keyboard and then output it to a data file. I was trying to use cin for the strin...
[1 reply] : You should read this: http://www.cplusplus.com/forum/articles/6046/ (by Bazzy)
by vikasnapster
Having problems with TURBO c++
 
I ran the following program in Turbo C++ and got some errors related to the usage of the new operator. However, when i ran it in UNIX, or the g++ version of UNI...
[3 replies] Last: Man, just dont use Turbo C, it's totally out-standard. (by outsid3r)
by wimvd
maximum allocation size not reached?
 
Hi, To store data from a precalculation on about 1100 images and 830000 features, i'm trying to allocate about 3.5 gigs of memory but it seems not to be work...
[2 replies] Last: [wvandam@cancer ~]$ ulimit -m unlimited Unlimited should work. :) (by wimvd)
by DiptenduDas
How to restrict automatic Type conversation in C++?
 
I want to restrict automatic type conversation in C++ function calls. I have the below piece of code in which a function is called which takes an int value, ...
[3 replies] Last: I agree with kbw's solution. (by jsmith)
by blachniet
sprintf vs stringstream
 
Are there any advantages to using sprtintf over stringstream? Is it any faster since it does not dynamically allocate memory?
[1 reply] : When you can choose between C and C++, always choose C++. So use stri... (by Bazzy)
by luckycusp
Init 2D Vectors
 
How can I initialize a 2D vector at the place where its declared. An single dimension vector is done as shown below:- std::vector<double> my_1Dvector(10,0....
[2 replies] Last: thx a ton! (by luckycusp)
by bzz77
C++ beginner's questions on vectors of vectors (declaration, definition)
 
Hello everyone: I am a C++ beginner. I have questions regarding vectors of vectors. I have read the available threads on this topic and would very much app...
[2 replies] Last: Hi Disch: Thanks a lot for your example and for your advice about u... (by bzz77)
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