General C++ Programming - C++ Forum

write a small b before capital B in the file. This isn't easy.

Suppose my file a.txt has "ABC" written in it. Now I want to write a small b before capital B in the file. How will I do it. I've tried to do it but i'm having ...

[5 replies] Last: Thanks a lot JLBorges! (by Rehan FASTian)

by gogobumrush

Validating that there are no integers

I am working on a program where the person enters their name and their gross pay. I had to validate that the gross was a number and contained no letters. I ...

[4 replies] Last: Thank you for the help I do appreciate it. I get those results. The pr... (by gogobumrush)

by alen1234di

[Help!] tic tac toe void function (1,2)

void newtable (char board ) { for(int n=0;n++;n<5) { if(n%2==0) board =(' ','|',' ','|',' '); else ...

[29 replies] Last: so i got it down to this void clearboard (char board ) { board = {... (by alen1234di)

by dekeenfrance

Value define problem in class function

Hi, I have a class: class testa { public: int n; double s; void funca(); } void funca() { n = 500; s = 1.0/n; cout << s << endl; } The ...

[7 replies] Last: s inside funcb() is function local. You will got an error on line 20. ... (by MiiNiPaa)

by I 8 Crayon

HELP- not saving text to the specified location

Here's my code, my problem is that it is not sending the keystrokes to the LOG.TXT file I want them to be going to. What am I doing wrong? 1 #include ...

[no replies]

by Anmol444

ostream/istream iterators

How can they be classified as iterators? http://en.wikipedia.org/wiki/Iterator The Wikipedia definition says: "In computer programming, an iterator is...

[4 replies] Last: Thanks guys! (by Anmol444)

by I 8 Crayon

HELP- [Error] 'fprintf' was not declared in this scope

I have this error- 'fprintf' was not declared in this scope (line 32) and this 'fclose' was not declared in this scope (line 33) here's my code...

[3 replies] Last: nevermind that was a stupid question...... (by I 8 Crayon)

by Anmol444

Smart Pointers

When i try to compile this code it gives me a error during run-time saying "*program name* has stopped working" Code: #include <iostream> #include <memory> u...

[5 replies] Last: Oh ok thanks, that makes sense. So they can only point to dynamically ... (by Anmol444)

by ovaltine99

Please help! My program is not reading in values from a .DAT file correctly

Hey guys I'm really stumped on this problem I'm having in my lab. We are supposed to split this lab into 3 files a .h and 2 .cpp's. The code I'll be talking abo...

[1 reply] : This is my code from the previous lab we are supposed to build off of.... (by ovaltine99)

by fnaqesa

initialising arrays

How do you set all the entries in an array to 0 or a particular number... much appreciated

[3 replies] Last: Misc. other stuff: - For char arrays, you can also use const size_t... (by andywestken)

by I 8 Crayon

Help- expected unqualified-id before '{' token

here's my code, I get this error on line 16 expected unqualified-id before '{' token What am I doing wrong? 1 #include <iostream> 2 using names...

[2 replies] Last: Thanks you! (by I 8 Crayon)

by Anmol444

Iterators

From my book: "Iterators are objects that behave like pointers and are very important for accessing the contents of all STL containers, except for those defi n...

[14 replies] Last: Alright thanks guys. One question about line 36 and 37. Why is the ar... (by Anmol444)

by jtsf

polymorphism

Can anyone can explain with example for polymorphism? the book says : polymorphism allows an object reference variable or an object pointer to reference ojec...

[1 reply] : http://en.wikipedia.org/wiki/Polymorphism_%28computer_science%29 http:... (by MiiNiPaa)

by stx361

Encrypting for a school

So, I'm new, to this forum and to c++. Second, this is for a class, so I really don't want the answer, as I would like to learn the coding. if (m == 'e' |...

[5 replies] Last: Sorry for the slow reply, I appreciate you help. Thank you (by stx361)

by fnaqesa

arrays

Can someone explain to me about arrays and functions: I want to know everything and anything there is know about these two from how to declare, define, how to...

[1 reply] : http://www.cplusplus.com/doc/tutorial/arrays/ (by MiiNiPaa)

by fnaqesa

arrays and functions

Okay, im kinda new to this c++ program and all. One question is how do you make a 2D array(table) using arrays and functions eg: _ _____|______|_________...

[2 replies] Last: I've used a nested for loop to firstly create the table: but its not o... (by fnaqesa)

by Gawaine

Classes with exception problem

I have a program that uses class functions to enter and print out info. The problem is with the second function answers(). Here is the whole cpp file. In the an...

[6 replies] Last: whew! thanks I read a little about runtime_error to understand it bett... (by Gawaine)

by Jebus

Help in working in Object Oriented so far.

Hello for the past few hours I've been working with object oriented,

[13 replies] Last: I will finish it by tomorrow, im too sleepy i cant think at all. THANK... (by Jebus)

by jtsf

this-> pointer

As I am a beginner, I confuse the difference between this-> usages. question 1. this-> is used in draw.h My understanding at draw constructor this-> is...

[7 replies] Last: Thks for all. I like to confirm that.. Question 1 this-> can be omitt... (by jtsf)

by Anmol444

Comparators in STL

What exactly is a comparator in STL for containers? I see the term used in some places but I dont exactly understand what it means. Can anyone please expl...

[2 replies] Last: O alright thanks! (by Anmol444)

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General C++ Programming - May 2013 (Page 16)