C++ :: How To Create N Amount Of For Loops Without Writing All Of Them Out
Aug 22, 2014
Say I want to exhaust all the possible combinations of 10 variables to find all the solutions to an equation with 10 variables.
I could write out 10 'for' loops, but it would take a lot of space in the code and of course would take a lot of time. Another reason why I want to know this is because it could possible allow me to change the amount of for loops just by changing a number.
I.e., how can I contract the following code into a simple, short form?
for (a[0]=0;a[0]<=9;a[0]++)
for (a[1]=0;a[1]<=9;a[1]++)
for (a[2]=0;a[2]<=9;a[2]++)
for (a[3]=0;a[3]<=9;a[3]++)
for (a[4]=0;a[4]<=9;a[4]++)
for (a[5]=0;a[5]<=9;a[5]++)
for (a[6]=0;a[6]<=9;a[6]++)
for (a[7]=0;a[7]<=9;a[7]++)
for (a[8]=0;a[8]<=9;a[8]++)
for (a[9]=0;a[9]<=9;a[9]++)
if (...)
cout << ... << endl;
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Mar 15, 2013
I need to represent each inputted amount of rainfall into a graph like this.. how would I do this with loops?
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Jun 27, 2014
I need to create a program that continuously records data until the user enters '0'
The data that I read in is the student's last name, the year of the student (1-4), the major, the gpa, and the advisors name. I then need to print out how many students are in each year (1-4), the number of students each advisor has, the average gpa for each major, and so on. This is what I have, but I am stuck and think that I might be headed the wrong direction because the only thing working is the loop (not my gpa test calc).
//This program displays information pertaining to students
#include <iostream>
#include <string>
using namespace std;
int main () {
int studYear;
double average, studGpa;
string studName, studMajor, studAdvisor, complete;
[code]....
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May 21, 2013
Here are the requirements for a project I am working on.
Write a function that will write only unique ip addresses to a file (just the ip address, not the entire line).
Write a function that will search for an ip address and display all page requests for that ip address.
The ip is pulled from a "weblog.txt" file which has been put into a vector and sorted. I am having trouble with the loop to pull only unique ip addresses from the vector.
Code:
#include<iostream>
#include<vector>
#include<fstream>
#include<string>
#include<algorithm>
void nonmember();
void sortnonmember(std::vector<std::string>& webvector);
[Code] .....
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Mar 23, 2012
Ive written a long program that should be a bubble sort , unfortunately I cant use loops ...is there any way i can shorten this and make it indeed a bubble sort? Its sorting atm but its not entirely correct.
Code:
#include <stdio.h>
#include <iostream>
#include<fstream>
#include<string>
[Code].....
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Jan 4, 2014
Figure this out using [TURBO C]
Create a program that will let the user input an amount in the form (367). The Program should determine the no. of coins for each dominations : 50,25,10,5,1. (using Turbo C)
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Sep 18, 2014
I want to create a specific number of for loops each in another loop, as in example:
for(i=0;i<9;i++)
{
for(j=0;j<9;j++)
{
for(k=0;k<9;k++)
{
//some stuff
}
}
}
In this example there are 3 loops, but what if i want to create e.g. 10 such loops, and program reads a number of loops from a txt? It is needed for checking numbers.
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Feb 25, 2015
I'm trying to make a program that allows the user to input an arbitrary amount of numbers and finding the largest of all the inputs but I keep having problems with the output.
javascript:tx('
#include <iostream>
using namespace std;
//******************************************
//CLASS COMPARATOR
//******************************************
class comparator {
public:
comparator();
[Code] .....
And regardless of what numbers I enter, I always get the output of 10. Also I got the EOF idea from my textbook so if there is a better way of doing this I'd like to hear it. I don't know any clear ways that looks nice to end the while loop when the user doesn't have any more numbers to enter.
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Mar 6, 2013
I bet there's a simple function that can return the amount of RAM available on the computer, or perhaps the total RAM on the chip.
Basically I want a way of making sure my program never tries to allocate memory when it can't... I know that Windows should stop this happening anyway but I want to make sure the program can take care of certain things if it happens.
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Feb 25, 2015
I want define Variable that has all amount of between two integer example: 2-4
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Oct 25, 2014
I'm trying to make a very simple reaction game where a random number flickers on the screen for a fraction of a second and the user has to then enter the number before another comes on the screen after a random amount of time. However I dont know how i would make it so that the user cannot enter anything after a certain amount of time has passed, below is my code?
Also FYI, clock_start is at 5100 because by the time the program actually gets to scanning in the first number the time is at an absolute minimum of 5050 milliseconds however obviously this is an impossible number to reach due to processing, my machine clocks in at 5080.
Code:
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include <windows.h>
int main(void){
[Code]...
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Sep 29, 2014
How to write a code that will let me input how many variables I want.
Write a program that will enable you to enter a certain amount of values
Eg. 4
And then add the corresponding integers. Ex.
Choice: 4 12 34 56 78
The sum of the integers is: 180.
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Mar 8, 2014
I’m writing an application for raw image processing but I cannot allocate the necessary block of memory, the following simple code gives me an allocation error.
double (*test)[4];
int block = 32747520;
test = new double[block][4];
off course with smaller block size (i.e. int block = 327475;) it works fine. Is there an allocation limit? How it is possible to deal with big blocks of memory?
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Aug 22, 2013
the program has to accept a keypress. It should wait for some fixed amount of time. If a key is pressed within this time, the program should call a function. If a key is not pressed in this time limit the program should continue its normal execution. The problem with getch() is that it essentially requires you to press a key and it does not allow other instructions to execute until the key is pressed.
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May 18, 2014
I'm quite new to programming and working on an algorithm for the program so we would have to change that into a workable code for our final program.
This is the algorithm teacher gave us for reference (with the functional decomposition):
3.9.3 convertNetPay()
// convertNetPay(in netPay, out netPayString)
char * convertNetPay(float netPay);
void convertNetPay(float netPay, char * netPayString);
Algorithm:
convertNetPay(in netPay, out netPayString)
Declarations: numHuns, numTens, numOnes as integer
OnesTable as array[9] string = {"One", "Two","Three", ...."Nine"}
"One" --> 0
"Two" --> 1
"Three" --> 2
...
[Code] .....
So that goes my entire instruction on the assignment and I will start my code and be probably asking quite a bit of questions!
Here is my code so far:
Spoiler
#include <stdio.h>
#include <stdlib.h>
#include <cstring>
void convertNetPay(float netPay, char *netPayString) {
int numHuns, numTens, numOnes;
[Code] .....
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Oct 31, 2013
Client:
Code: ....
string cmd = "dir c:filequeue > ";
string outputFilePath;
outputFilePath.append(getTempPath());
outputFilePath.append(" est.txt");
cmd.append(outputFilePath);
system(cmd.c_str()); // dir c:filequeue > %temp% est.txt
string content = get_file_contents(outputFilePath.c_str());
send(s, content.c_str(), content.length(), 0); I'm executing the "dir" command to get a listing of Folders/files of one Folder. Then I read the Output of the file and send it over winsock to the Server.
Now, the Problem is, I don't know how I can handle the recv properly, cause I have to set the buffer size without knowing, how much data is actually transfered. Sometimes maybe no files are in c:filequeue, sometimes a 100k.
So I tried to make recv as a Loop:
Server:
Code: ...
while (rc != SOCKET_ERROR) {
printf("
#");
gets(buf); //please no discussion about gets, I will Change this later ;)
if (strcmp(buf, "ls") == 0){
send(connectedSocket, "LIST", 4, 0);
[Code] .....
now it works, but as the recv blocks, it will never leave the Loop, even when the Transfer is finished.What should I do?
I believe I could make unblocking sockets, but that's a bit complicated. Isn't there an easier solution, with malloc'ing the buffer or a Signal when to leave the recv Loop?
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Mar 8, 2014
Write a program in C that will allow a user to enter an amount of money, then display the least number of coins and the value of each coin required to make up that amount. The twist to this program is the introduction of a new coin - the jonnie (value = $1.26). Therefore, the coins available for your calculations are: Twonies, Loonies, Jonnies, Quarters, Dimes, Nickels and Pennies. You can assume the amount of money user enters will be less than $100.00.
User enters $4.53. Your output should be:
The least number of coins required to make up $4.53 is 4. The coins needed are:
1 Toonie $2.00
2 Jonnies $2.52
1 Penny $0.01
$4.53
I'm wondering if i'm close. I'm stuck on what to do for the output. This is what i have so far.
Code:
//Start
#include <stdio.h>
int main() {
//Get user input for amount of money
//Input
int i;
//Store input from user
[Code] .....
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Sep 7, 2013
How can I view the number of bytes that have been allocated by using the malloc function?I tried:
mem = (float*)malloc(num*sizeof(float));
printf("The amount of memory allocated using malloc is %d.", mem);
Note: The variable "num" in my program is equal to 7.But every time I run the program, this value changes.
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May 14, 2013
How do you find the amount of space in a char array?
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Mar 9, 2013
Say I want to leave a program running and it stops when I press F9 for instance, I'm looking for something like (and note this is just a generalization).
#include blah
using namespace std;
/wait 2 hours
/key.press = F9
return 0;
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Oct 25, 2014
I have part of it done but im not sure how to get my amount balance to get into my other functions from my file...
#include<iostream>
#include<fstream>
using namespace std;
void welcomeUser();
bool readFile();
void menu();
[Code] ....
and the amount saved that I have in the file is 1200
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Feb 20, 2015
I have a program that rolls two dice however many times the user specifies and counts the occurrences of each total (2-12). I have to compare the results of the random rolls to the expected outcome and give the percentage of error between the two.
I have an example that tells me the sum to expected outcome are as follows if I roll 36 times: 2/1, 3/2, 4/3, 5/4, 6/5, 7/6, 8/5, 9/4, 10/3, 11/2, 12/1 but I don't know how to put that into code to get the expected outcome for X amount of rolls.
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Nov 10, 2013
I am trying to calculate a discount based on amount bought. Why this doesn't work?
if (concreteAmount<=500)
concreteDiscount=.02;
else if (concreteAmount>500 && concreteAmount<9001)
concreteDiscount=.04;
[Code] .....
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Nov 28, 2012
I have to store large amount of data and retrieve the same data then write into file in C++. Currently I am using vector to store and retrieve. But vector is taking more time to store and retrieve the element. Is any other best data structure to store and retrieve large amount of data in unordered way?
Example code:
int I1 = 700,I2 = 32, I3 = 16;
//declare and resize the vector size
vector< vector < vector < vector<DOUBLE> > > > vPARAM;
vPARAM.resize(I1, vector< vector < vector<DOUBLE> > >
[Code] ....
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Mar 1, 2013
I'm currently working on a program to take the user's input as DDDD.CC and then converting it to the least amount of coins using quarters, dimes, nickels, and pennies. I was told to not use any doubles or floats as they would produce errors. And supposed to the use the library function atoi() after I take the input user's amount as a string to convert it into an integer.
So far the string input has worked and it produced the right number of quarters but it leaves off the cents. For example, I put in 352.23 and it gives the right amount of quarters but leaves off the 23 cents.here's my code:
#include <iostream> // Allows the program to perform input and output
#include <stdlib.h> // Atoi
#include <string>
using namespace std ; // Enables a program to use all the names in any Standard C++ header
int main() // Start of program execution {
string line ;
[code]....
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Sep 10, 2014
Write a program that will input the amount of chairs sold for each style. It will print the total dollar sales of each style as well as the total sales of all chairs in fixed point notation with two decimal places.
The program runs fine I am just have problems with the output. I have tried a few different methods for the fixed point notation, but I am getting results like 324.5 rather than 324.50?
#include <iostream>
using namespace std;
int main() {
//Declares variables for chairs
float americanColonial;
float modern;
float frenchClassical;
[Code]...
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