2.What the heck does this mean? "256 D:\game.cpp jump to case label " "131 D:\game.cpp crosses initialization of `int randomm' "
You are trying to define a variable within a case statement of your switch. This doesn't work due to scoping laws. The quick and easy method to over come this is
switch(x){
case 1:
{
int b;
}
case 2:
Etc.
[1] Well use a while loop, with a bool flag, so something like this
And when you first enter the loop you should set the values for health etc there. So each time it go back to the start of the loop, before printing the menu it resets health etc.
Look at this bit of code, you generate the random number and store it in random4 then in your if statement you check against rando3, which is the loop value, not the random number.
Just to mention, you don't have to declare char ptr, you can simply cast string: (LPVOID)"HELLO"; But, if you want your string to work inside function that you call, you have to typecast it back to (char*)
Yes, im aware of both of these, it was just the mere fact i was paying way to much time listening to my god damn compiler / IDE and not enough looking at what i had actually written!
2.And oh yeah, with the source code i posted, whenever you have LESS than 0 money it tells you you don't have enough money. How do i make it calculate for example: You have 8 money and wanna buy something for 10 money = Not enough money.
It does work... just your not checking the random number! Your checking the loop inwhich you are generating a random number, so the loop counter always reaches 2 when it stops. So when you check what value it is, it's always going to be 2! you should be checking the random number Chris
You need to seed the random number generator to make it generate a true random number. Try
#include <ctime>
....
srand((unsigned)time(0));
As for not having enought money you may want to try putting "break" statements at the end of your switch cases... but I forget
He already does seed it, at a quick glance i would make a suggestion of changing your functions to save lots of calls to the function example
void merliv(int x)// more life
{
liv += x;
}
That way all you have to make is one call and you can increase it by however many you want, aslong as it is within the size of an int ofcourse. Which it would be.
Not to sure what your actualy problem is but you are assigning X to [0][0] where X is a char that doesn't have a value and is not initialised. So you assign some random value from your memory into the array. NOT GOOD.
guys iam still new alright dont warry next time i will follow the stractures
NOW are you going to help me or just add some Comments
Next time is good but what about this time, If you take into consideration what we said then we can help you. Until then we are pretty much just taking radom stabs in the dark.
Your going into searching and sorting algoithms. If the numbers are in ascending order then you can perform a bnary search which optimizes speed for finding the number. If is is not sorted into order then you must perform a sor of some kinf such as a quick sort. check these out on wikipedia
U should start with Socket programing; reffer to book "beejs guide to network programing " u can do it with in 3 days
I would question what, i think he may have problems installing a compiler on his pc let alone managing to write a simple hello world application, since he seem's to struggle with clicking and read.
Although he doesn't seem to have a problem with java, perhaps i missed something here!
To build on what Sci@phy siad, narrow it down to a small section of code aswell. Don't expect us to read all of that when we may only need to look at 5 lines of it!
No, there is not standard C++ method of doing this, or at least not that im aware of. If your using linux i believe the ncurses or pdcurses headers may have something to heklp you out. If your on windows then you can use windows.h
The file will be read line by line. So the first line would be stored in the first variable. Ofcourse, if you want to make it possible to loop throught the file until all the variables are read in then your best bet would be to use and array (not stricktly true, vectors would be better but don't worry about those yet).
so create an array of doubles then loop throught the file storing each line into the next cell in the array.
i would do something like this
#include <iostream>
#include <string>
#include <cstdlib>
#include <ifstream>
int main(void){
char myFileName[64];
string line;
double numbers[100] = {0};
int x = 0;
ifstream locationtemp;
cout << "Enter the file name.\n";
cin >> myFileName;
locationtemp.open(myFileName);
if ( !locationtemp.good() ){
cerr << "\n\nERROR:Unable to open file/File did not open correctly\n";
cin.get();
return(1);
}
while( !locationtemp.eof() ){
getline(locationtemp, line);
numbers[x++] = strtod(line);
}
locationtemp.close();
return 0;
}
Something along those lines. Untested i don't have access to compilers in college
You should have a read about functions and parameters.
#include <iostream>
int Plus(int x, int y){
return x + y;
}
int main(){
int number;
int number2;
char op;
std::cout << "type in a number" << std::endl;
std::cin >> number;
std::cout << "another number" << std::endl;
std::cin >> number2;
std::cout << "+, - , * or /?" << std::endl;
std::cin >> op;
if(op == '+'){
std::cout << Plus(number, number2) << std::endl;
}
system("pause");
return 0;
}
I should point out you cannot read a '+' sign into an int, hence why i changed it to a char. Also you cannot use 'do' as a variable name as it is a command used in do..while loops.
pow() and also sqrt() will find the square root of a number xD
pow takes to aruments first is the number to be raised to the powerof the second number if that makes sense.
Also i should talk about the chain rule.
the chain rule can be used to find the derivative of (ax+b)^z in a few simple steps. It also applies to finding the derivative of e^(x-3x^2) in your case
the chain rule is this
dy/dx = du/dx * dy/du
now where does you come into well we set the power of e = u so
e^(x-3x^2) becomes u = x-3x^2
therefore, we get this
f(x) = e^u therefore dy/du = e^u.
but we must find the derivative of u
u = x-3x^2 du/dx = x-6x
so back to the chain rule.
dy/dx = du/dx * dy/du
dy/dx = (x-6x) * (e^u)
dy/dx = (x-6x)(e^(x-3x^2))
Hope that helps you with finding the correct derivative.
Wrong it does, pick a number >= 60 it will work fine. mpm is an integer, integer's ignore and decimal places, so and number small that 60 when divided by 60 would make mpm equal to 0, thus 0*2 = 0, so the program continues to loop multiplying 0 by 2 until it reaches a number greater than one, which it won't.
strtok() would help. read some online documentation on it.
It splits a string based on a delimiantor such as a pipe, this would allow you to retrieve all the different ssctions between the pipes. Then you could further process the {} out of the data.
Trying looking at how notepad is called from the registry command when you open a file, that tells you what to do for your application, if you apply some common sense.
> will the first argument be the file name from which the program has been called? Yes.
I have a feeling you may get mixed up here, the FIRST would be argv[0] which ofcourse is the name of the application, once you set your registry then argv[1] will be equal to the text file that called it.
Btw, atoi() will convert it to a number, this may prove helpful for you to multiply your numbers. It will also convert it back to a char from a number.
Have a look at partioning software such as partition magic. This should run fine from boot of a floppy disk and allow you to delete all partition on the computer leaving it blank ready for OS installation. Providing the bios isn't screwed and will allow for boot from cd
Hey guys, i recently installed Xubuntu 8.04 on my pc. And have been having issues getting my Belking wireless adaptor to work.
I followed an online guide and it now appears that my wireless adaptor is being recognised. However i am unable to "find" and connect to my netowrk... im guessing i have to configure it somehow only im stuck on that.
We could spend all day trying to get you to re-build all of the incorrect includes etc on Dev or you could just reinstall it, since my guess is, ALL of the include directories etc are out. A re-install would take no time at all and would solve it all.
