Beginners - C++ Forum - February 2011 (Page 22)

c++

Please can someone help me solve this equation. square root of a^2+b^2 = c. thanks.

[5 replies] Last: double c = sqrt(pow(a, 2), pow(b, 2)); Assuming both 'a' and ... (by sadavied)

this code wont work for some reason. It compiles and executes but the only thing that shows up is a black screen. I put the BMP in the same file as the exe. but...

[1 reply] : Please stop posting the same question on multiple threads. It's very ... (by cnoeval)

by Jaguar4

just general questions

1) How do I wrap lines? Example: cout << "Hello blah blah blah ... too long... runs on in the window.. I want to wrap it like this."<<endl<<"Continuing on b...

[4 replies] Last: Any of these work: std::cout << "Stuff on the first line ..." ... (by jsmith)

by bihcity08

string::find ?

// string::find #include <iostream> #include <string> using namespace std; int main () { string str ("There are two needles in this haystack with need...

[1 reply] : yes. (by jsmith)

by soumyaxyz

a question on loop efficiency

i was wondering int determinant(int n){ for(;n>0;n--){ D*=A[n-1][n-1]; } D/=ms; return 0; } or int determ...

[13 replies] Last: That's the command that added the whitespace to the code above. (by moorecm)

by rekson

No newline at end of file

I just wrote a simple program that reads from a file and displays one of the numbers in it here: #include <iostream> #include <fstream> #include <iomanip>...

[1 reply] : Some text editors append a newline to files which end with something t... (by Bazzy)

by vRltwE

Problem with GNU Scientific Library Example

Hi, I am using exact the code showed in "2.1 An Example Program" from "http://www.gnu.org/software/gsl/manual/html_node/An-Example-Program.html" #...

[2 replies] Last: Did you tell the compiler/linker that you want to link to that library... (by Bazzy)

by CppNewb

What am I not doing right? I won't build!!!

//Header file #include <iostream> #include <string> using namespace std; using std::string; class Employee { public: Employee ( string, string, ...

[3 replies] Last: Here's something that compiles. Compare it with the corresponding line... (by Moschops)

by chess

C++ function

Hi I would like to know why we do not define function parameter inside the function itself and why we are allowed to used them?

[1 reply] : Function parameters are information passed into the function. int ... (by some random dude)

by notme

reading from a file to an array, then printing it out

i need help with a problem im having, im trying to read in some things from a .txt file and put them in an array, then print out the information, i just cannot ...

[3 replies] Last: char word ; while(file >> word){ //now word is A, K, Q, J or T ... (by hamsterman)

by Melander

Reading a file and then printing

Hi! I am writting a program that needs to be able to open up a .txt file check its content go through the lines and pick out certain lines for example: 12...

[no replies]

by paki programmer

Graphics library

What do you guys think would be a good graphics library to start out with for game programming?

[14 replies] Last: what about hge? http://hge.relishgames.com/ does anybody use it? (by KillerkoUK)

by KillerkoUK

Collisions troubles, sprite vs tile map

hiya I have some troubles with collisions in my simple 2d platformer (in HGE) thats driving me crazy i have a simple 2d array tile map drawn on the scre...

[no replies]

by firix

Binary_tree pointer and references

hello friends, I'm trying to write an implemenation of an unbalanced binary search tree.I have most of the basic functions working like create tree, attach n...

[1 reply] : Bnode *Btree::maxNode(Bnode *pnode)const { Bnode *pivot = pnode;... (by ne555)

by Casper3912

Home work troubles, Memory exception

I am in a distributed education programming class, our most recent assignment has me stumped with a error that is driving me insane. The IDE I have on my person...

[4 replies] Last: aw ok, thank you that got it working! (by Casper3912)

by paki programmer

SFML troubles

i decided to start learning SFML and i looked up the instructions on how to install it to VC++ 2010. I did everything perfectly. Now here's the problem.... I...

[15 replies] Last: If you are running it from the IDE, try going directly to the .exe and... (by Danny Toledo)

by acorn

about list

how can i declare a object of list. a object of my own. and be able to insert and remove at any position by using an index. I tried to add to the list using an ...

[1 reply] : The first parameter needs to be a list<myobject>::iterator, not an ind... (by Zhuge)

by zr870

Compiler Error "non-lvalue in assignment"

when i compile this code i get "error: non-lvalue in assignment" why? Just so you know, this program soves for the missing parts of a triangle, los and loc are ...

[1 reply] : void missang() //Finds the missing angle if only 2 are entered { ... (by Danny Toledo)

by tian

Accessing values from a different function

Say i have 2 function, a and main. Function main wants to access a value used internally in function a without returning the value. Is there some simple way to ...

[3 replies] Last: thanks, pass by reference did the trick. I knew it had to be someth... (by tian)

by paki programmer

SDL troubles

i decided to start learning SFML and i looked up the instructions on how to install it to VC++ 2010. I did everything perfectly. Now here's the problem.... I...

[no replies]

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Beginners - February 2011 (Page 22)