C++ :: Program Is Not Calculating Sums Correctly?
Jun 20, 2014
I am getting this weird error when calculating sums. Here is what my program does: it generates two random numbers and then randomly puts either an addition or subtraction sign between the two and then I am asked to enter what the correct answer for that question is. But on some of the subtraction questions when I give the answer it says I got it wrong after which the program shows the right answer. What's confusing is that the answer the computer calculates is the same that I entered. Anyways the complete program and a screenshot of the console window which shows the error are below. The function in question here is decAddSub at line 54. The error is shown in the first sum in the output window. It doesn't affect addition problems and only affects some of the subtraction problems.
#include<iostream>
#include<stdlib.h>
#include<time.h>
#include<random>
[Code].....
View 2 Replies
ADVERTISEMENT
Feb 7, 2015
My program isnt averaging correctly.
#include <iostream>
#include <string>
#include <iomanip>
#include <cstdlib>
using namespace std;
struct nameGPA {
[Code] .....
View 4 Replies
View Related
May 20, 2013
We are supposed to split this lab into 3 files a .h and 2 .cpp's. The code I'll be talking about is going to be directed at the main.cpp file. Basically we are supposed to be able to enter as many classes into the program and when you are done the program is supposed to save the contents into a .dat file. This lab is working off of an older lab so I already have a .dat file I am trying to test with this program by reading it into my program when I first run it I prompt if the user wants to load previously entered courses and if they reply with a 'Y' the program will load the contents of the .dat file. Problem is right now when I load from the .dat file only the first class is correct. Every other class after that is just giberish. I've tried everything but can't get the restore part working. I also cannot get the save to .dat portion of this lab working either.Here is my code:
#include "Course.h"
#include <iostream>
using std::cout;
using std::cin;
using std::endl;
using std::ios;
[code]....
View 1 Replies
View Related
Dec 30, 2014
the problem and my code is at the bottom, the thing is when i checked out what my change was, it was it was like -14.23 which is werid.
Write a program that determines the change that the user should receive after having paid for their purchase. Your program
prompts the user for the number of items purchased
accepts the number of items purchased
prompts the user for the unit price of each item
accepts the unit price of each item
calculates the total purchase price, including HST
outputs the total purchase price
prompts the user for the cash tendered
accepts the amount of cash tendered
calculates the change owed to the user
outputs the number of loonies in the change
outputs the number of cents in the change
You may assume that the user enters valid amounts and tenders enough cash to cover the total purchase price.
The output from your program looks something like:
Enter the number of items : 4
Enter the unit price : 3.15
Purchase price 12.60
HST (13%) 1.64
Total price 14.24
Cash tendered 20.00
Change loonies 5
Change cents 76
[code]....
View 3 Replies
View Related
Jun 2, 2013
I have a procedure that prints the fields of ethernet frames and ip headers. I have an issue with the src mac addr being printed incorrectly and incompletely. The part in red is the trouble code.
Code:
1#include "sniffer.h"
2
3void print_headers(struct ethhdr * ethhdr, struct ip * iphdr){
4
5 char ipstr_src[INET_ADDRSTRLEN];
6 char ipstr_dst[INET_ADDRSTRLEN];
7 char macstr_dst[ETH_ALEN], macstr_src[ETH_ALEN];
[Code] ....
View 2 Replies
View Related
Oct 10, 2014
Why this program won't correctly print the proper totals on screen? See my code and the included screenshot.
Code:
#include <stdio.h>
int main(void) {
int total, first, second;
printf("Enter 2 numbers:
[Code] .....
View 4 Replies
View Related
Jun 4, 2013
refer to this image: [URL]
program for calculating overtime payment of an employee?
View 11 Replies
View Related
Jan 28, 2015
I have written an program to emulate a shopping list. Everything works fine, until I try to read in from a file. Here is my read and write code (the write code looks like it is working ok, but I figured I would include it just in case), and an example of what happens to a list that has been written, then read back in.
I took this list, and wrote it to a file, then read that file back in. The .txt file looks like everything was written out properly, but when I try to read that exact same list back in, this is what I get:
View 10 Replies
View Related
May 5, 2014
I am having trouble calculating the median and mode in a program that I am writing. When I run the program, lets say there are 5 students being surveyed. The input is as follows, Student #1 sees 2 movies, student #2 sees 6,student #3 sees 5 movies, student #4 sees 2 movies, and student #5 sees 1 movie. However, for the median, I get 5, because that is at element 2, and thus midway through the count, so the program interprets that number as the median. For the mode, even though 5 is repeated twice, the program displays that there was no mode, or displays "-1" (indicating no mode). Here is my code:
Write a program that can be used to gather statistical data about the number of movies college students see in a month. The program should perform the following steps:
A) Ask the user how many students were surveyed. An array of integers with this many elements then be dynamically allocated.
B)/> Allow the user to enter the number of movies each student saw into the array.
C) Calculate and display the average, median, and mode of the values entered.
Input Validation: Do not accept negative numbers for input.
#include <iostream>
#include <iomanip>
using namespace std;
// Function prototypes
double calculateMean(int *, int);
double calculateMedian(int *, int);
int calculateMode(int *, int);
[Code] .....
View 2 Replies
View Related
Sep 19, 2014
I'm trying to create a code that generates random numbers and spits out a sum average and lowest and highest number. I am stuck on the sum however and once I get that I think the average will fall into place. Here's what I have.
#include <iostream>
#include <iomanip>
#include <ctime>
#include <math.h>
using namespace std;
[Code] ....
I've noticed that it's almost always off by 1 or 3 for whatever reason
View 9 Replies
View Related
May 3, 2013
1) This first function initializes an array of 30 components so that the first 15 components are equal to the square of the index value and the last 15 components are equal to the index value multiplied by 3.
2) The second function processes the array by finding the sum of the first 15 components and the sum of the last 15 components to determine which sum is bigger. The output to the screen should do the following:
a)State “The sum of the first 15 components is:” and then show the sum.
b)State “The sum of the last 15 components is:” and then show the sum.
c)State which of the two resulted in the greater sum or if the two sums were equal.
Function: The program uses two subroutines. One to initialize an array and the other to process the array and print to screen results:
#include <iostream>
#include <iomanip>
// Include any other header files you may need.
const int ARRAY_SIZE = 30;
void initialize ( double list[], int index );
void square ( double list[], int index );
void threeTimes ( double list[], int index );
void output ( const double list[], int index );
[Code] .....
View 4 Replies
View Related
Mar 10, 2015
I have an assignment that I have to make a 3x3 magic square that sums up to 15 on all sides. I can't use arrays, just Loops and If and Else statements.
My first attempt was like this
//Program for printing magic square that sums up to 15.
#include <iostream>
using namespace std;
int main() {
int a, b, c, d, e, f, g, h, i;
int r1, r2, r3;
int c1, c2, c3;
[Code] .....
I can't think of a way to loop that when it prints out, it will have a sum of 15 on all sides and/or print one of the 8 solution for a 3x3 magic square.
View 3 Replies
View Related
Feb 1, 2015
I am building the game risk and I want to start off with a dice rolling mechanism. In risk 5 die are needed so I want to know the most efficient way of churning out the code for this. Since the players have the options of rolling 1, 2 or 3 die (max 3 for attacker, and max 2 for defender) I was thinking something like this after searching the web for a few different options:
const int minNum = 1;
const int maxNum = 6;
int numberGenerator(){
int x;
x = minNum + rand() % (maxNum - minNum + 1);
[Code] ....
Since I will be asking the player the option to choose how many die to roll, is this the most efficient way? I want to compare the total sums after the die are rolled. If they choose 3 dice (the attacker) I will simply call the first 3 methods and either 1 or 2 for the defender.
View 14 Replies
View Related
Feb 28, 2013
The problem is that you have a set of numbers and you need to divide that set into two subsets where the difference between the sums of the subset is minimal.
Example: a set of numbers {1,5,9,3,8}, now the solution is two subsets, one subset with elements {9,3} and the other {8,5,1} the sum of the first one is 13 and the sum of the second is 13 so the difference between the sums is 0. The result shows the difference between the sums.
Another example: a set of numbers where the difference between the subsets cannot be zero, {9 51 308 107 27 91 62 176 28 6}, the minimal difference between the two subsets is 2.
I want to know how the function finds the two subsets, it works great because I've tested it for up to 300 inputs which sum adds up to 100,000.
Code:
#include <iostream>
#include <stdio.h>
#include <math.h>
#include <stdlib.h>
#include <limits.h>
using namespace std;
int BalancedPartition ( int a[] , int n ) {
[Code] ....
View 3 Replies
View Related
Sep 13, 2014
I would like to make a program for calculating the total price of a game station, and a game. I made a program like this for just the price of a game in class, but I want to make one that does the game system as well.
View 7 Replies
View Related
Feb 17, 2015
so i have this problem with my code ( not running)i want to read ( 2 double numbers x,y) and ( one integer z) then calculate reminder of x and y ( after they both converted to integer) and the formula : x^2 + y^2 + z^2and : x^z + y^z
here is what i came up with :
Code:
// compute.c
#include<stdio.h>
#include<math.h>
int main(void)
{
[Code]....
it also says in q : be sure to test the user input to make sure x,y,z are positive . any negative or zero should not be accepted and must print error msg ==> do i have to have an if statement here ? or the while loop is enough ?
View 9 Replies
View Related
Jan 23, 2015
I'm working on a school assignment that asks us to make code calculating the quadratic formula.
Code:
#include <stdio.h>
#include <math.h>
int main(void) {
double a = 0;
double b = 0;
double c = 0;
double discriminant = 0;
double solution = 0;
double solution2= 0;
}
[code]....
View 4 Replies
View Related
Jul 19, 2013
I'm writing a version of the classic Snake game. However, my board is not printing correctly. The right hand border is in the incorrect location. Also, when I randomly generate where the food ('X') is located, it only generates on the edges of the boundaries.
#include <iostream>
#include <cstdlib>
using namespace std;
const int ROWS = 21;
constint COLS = 61;
[code].....
View 5 Replies
View Related
Nov 2, 2014
When I try to open the cpp source in Visual Studio, it just opens a blank notepad window. The cpp file says its 4 kb and there was code in it.
View 5 Replies
View Related
Nov 26, 2013
#include <iostream>
#include <cstdio>
#include <fstream>
#include <string>
#include <iomanip>
using namespace std;
const int SZ = 55;
[Code] ....
View 1 Replies
View Related
Mar 10, 2013
Well I have my program running and the Variables are not passing correctly and the return statements are not returning correctly. Here is the parts that are not working.
#include <iostream>
#include "fight.h"
#include <time.h>
#include "player.h"
#include "stdlib.h"
#include <cstdlib>
using namespace std;
combat A;
combat::combat(void)
[Code] ....
View 11 Replies
View Related
Oct 28, 2014
I have an assignment for class .. It works, the do-while loop isn't working correctly. Once I am doing inputting information for any employee It should ask to continue. It doesn't, It skips that loop and prompts to enter the type of employee again.
#include <iostream>
#include <iomanip>
using namespace std;
int main( ) {
char empInput;
char continueResponse;
[code].....
View 3 Replies
View Related
Mar 5, 2015
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
[Code]....
It compiles just fine and it will add new entries and print the entries just fine but when I go to delete an entry it will delete it but it will mess up the one before it.
View 8 Replies
View Related
Dec 14, 2013
I am writing a program that manages a group of tool bins. This group is handled as an object that is an array of two element structures called InvBin. I initialize the bins with data from a file which contains the descriptions and initial quantities. I also have functions to add or subtract items from a bin and a function to display a report of the description and quantity of all of the bins.
The add and remove functions work correctly based on the cout statement in the functions, however when I display the report, it displays the initial quantity instead of the new quantity. In addition, when I use the add and remove functions again on the same bin, they use the initial quantity.
These are the add and remove functions and the report function from the main program.
Code:
//Adds an item to a bin
void addItem(HANDLE screen, BinManager tools, int &count) {
int binNum;
int addNum;
system("cls");
[Code].....
View 2 Replies
View Related
Jul 24, 2013
I've been working on this program to create a simple desk calculator for a school assignment, and I managed to finish. All we had to do was add, subtract, multiply, and divide positive integers - and I was able to do that just fine. This program got me thinking though, because I do not know how to write commands to multiply/divide negative numbers.
In fact, when I divide a number like 21 by 4, it comes out to 5 because I don't know how to allow it to compute remainders (which wasn't a requirement for my program). This intrigued me so I've been trying to figure it out for the last few days but to no avail. Here's my code:
Code: void flush_buffer(){
int ch;
while ((ch = getchar()) != '
' && ch != EOF);
[Code]....
And just know that my code works perfectly fine, I'm not here for troubleshooting it. I just want to know what I can change to allow negative values to be correctly computed.
View 12 Replies
View Related
Feb 14, 2013
Code:
public void dam_data_setup() {
// fill list
damgtype.Add( den1);
damgtype.Add( den2);
damgtype.Add( da1);
damgtype.Add( da2);
damgtype.Add( db1);
damgtype.Add( db2);
[Code] .....
This is a genetics program and is to parse the source array and write all possible combinations to a new array. All sections but dilute work correctly. For some reason the dilute's Boolean is not testing true when it should. This is causing data corruption.
View 3 Replies
View Related
