C/C++ :: Arithmetic Using A For Loop?

Feb 15, 2013

One thing that I was not able to fully understand even though I read through the section on it a few times, is the for loop. I mean, I understand the premise of (statement, condition, update statement). However, I do not quite understand how a math problem is affected by this.

How this works using multiplication and division? And lastly, why would you use a do.. while loop?

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C :: Convert String To Arithmetic?

Mar 16, 2014

I've got this string: Code: char * string = "2+2"; I want to get an integer value = 4 from this. How would I go about doing this.

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C++ :: How To Create BST For Arithmetic Expression

Jan 15, 2015

I am a c++ leaner, I am trying to create a BST tree for this expression: 2346*+/8+, and do inorder and postorder to get the in-fix version, and postfix version of the expression. I am having difficulty to create the binary tree for the expression. Here is my peso code:

Tree:
Stack:
inorder fn{}
postorder fn{}
main{
input the file;
while(expression){

[Code] ....

The tree I want to create is like this
+
/
(/) 8
/
+ 2
/
* 3
/
4 6

My problem for this code is that after create (4*6) tree, I cant link (+3) with (4*6).

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C/C++ :: Printing Out Arithmetic Sequence

Oct 6, 2014

I made a program that prints out arithmetic sequence.. but problem is that,

when I enter a(first term) =5, d(differnce)=2.4 and n=3 the program prints out only first two terms not three.. for all the other numbers it works correctly..

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C++ :: Defining A Custom Arithmetic Type

Jun 26, 2014

I want to create an unsigned arithmetic type that can hold a maximum size of 360. Without having to create a method.

It should be in such a manner that:

Code:
typedef uint8_t radius;
radius rotation = 0;

radius foo (radius rotation)
{ return --rotation;
}

returns 359, instead of 255, or 65535 or whatever max value the type I base my type on can hold.

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C++ :: Change From Array To Pointer Arithmetic?

Sep 12, 2013

#include <iostream>
#include <string>
using namespace std;

[Code]....

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C/C++ :: How To Find The Arithmetic Mean Of Each Column Of The Matrix

May 11, 2014

How to find the arithmetic mean of each column of the matrix and find the sum of all elements of this matrix?

Given integer matrix A of size NxM. Find the arithmetic average of each column and the sum of all matrix elements of the matrix.

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C++ :: Arithmetic Operators For Custom Class?

Oct 3, 2014

I have made a custom class matrices class which allows me to add, multiply, subtract (etc.) matrices. I have the following method for multiplication but I get an error that says

'invalid use of 'this' outside of a non-static member function'

How can I refer to the current instance without getting this error.

void operator *(Matrices& matrix2) {
this.multiplyMatrix(matrix2);
}

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C/C++ :: Pointer To A Function Used In Arithmetic Error

Nov 23, 2014

I'm working on a short program to calculate the mode of a vector of ints. I am new, so not extremely familiar with pointers, and passing items to functions. This is something I've struggled with (obviously, or I wouldn't be here). I am currently getting the following error when I try to compile this program using g++:

warning: pointer to a function used in arithmetic

I receive this error for the following lines: 66, 73, 75, 81.

I am not using pointers here so I do not understand why this error crops up, much less how to fix it. Here is the code I am struggling with:

#include <iostream>
#include <iomanip>
#include <vector>
#include <algorithm>
#include <limits>
using namespace std;
vector<int> getModes(vector<int> userValues);

[Code] ....

The errors are on lines 54, 61, 63, and 69

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C :: Arithmetic And Guessing Game Program Not Working Right

Nov 8, 2013

I am relatively new to C programming, and I am encountering numerous issues with this program that I cant seem to figure out how to fix.

First, when the user selects the arithmetic game, I keep on getting different incorrect answers from the arithgame function. For example, when I am presented with the question 3+2=_, sometimes the function claims the answer is the first number, 3, and other times the function gives me a multiplication answer, 6. This happens in both the addition and multiplication parts (ie. the multiplication answer will either be the first number or the addition answer).

Additionally, I cant figure out why my guessing game loops forever, rather than letting me guess until I get a correct answer.

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C :: Arithmetic / Guessing Game - Program Won't Compile?

Nov 8, 2013

Need getting my program to compile.

Code:
#include <stdio.h>
#include <stdlib.h>
#include <time.h>

//prototypes
int arithGame(int max, int op);
int guessGame();

[Code] .....

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C :: How To Determine Whether A Logical Or Arithmetic Shift Is Performed

May 26, 2013

If input value was shifted to the right on bit level. How can I determine whether a logical or arithmetic shift is performed.

Code:
#include <stdio.h>
#include <stdlib.h>
void main ()

[Code]......

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C++ :: How To Install High Precision Arithmetic Library

Jan 12, 2013

One of my programs I recently created, needs higher precision then what doubles can provide. So I am wondering how I install a library like this [URL] .... I don't quite understand exactly how to install them. Im using visual studio 2012 ultimate right now!

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C++ :: Arithmetic Operators Overloading For Class With Pointer

Nov 11, 2014

I am stucked in a problem of overloading arithmetic operators such as "+,*" for a class in the form

class Point {
int N; // dimension of the point
double *Pos; // length of N
}

My assign operator is :
Point& Point::operator= (const Point& pt) {
N= pt.N;
if(Pos == NULL) Pos = new double[N];
memcpy(Pos, pt.Pos, N*sizeof(double));

[Code] ....

The add operator "+" is:
Point operator+( const Point& pt1, const Point& pt2 ) {
Point ptr = Point(pt); // this is a constructor
for (int i=0; i<pt1.N; i++) ptr.Pos[i] += pt2.Pos[i];
return ptr;
}

Based on the above overloading, What I am going to do is :

P = alpha*P1 + beta*P2; // alpha and beta are double constants, P1 and P2 are Points objes

It is ok with Intel C++ 14.0 compiler, but does not work with the microsoft visual c++ 2012 compiler in debug mode in visual studio 2012.

I stepped in those operators and found that visual c++ compiler deconstructs the ptr in operators "*" and "+" before its return while intel c++ finished the operation P = alpha*P1 + beta*P2; and delete those ptrs at last.

Portability of my operator overloading is worse. How to get those arithmetic operators overloading for class with pointers in it.

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C++ :: Display Arithmetic Sequence After Adding All Numbers

Oct 7, 2013

This code is suppose to display arithmetic sequence after it has to add all the numbers together without a formula.

for example: the starting number is 5, common difference is 3, the term is 9

the sequence would display as: 5, 8, 11, 14, 17, 20, 23, 26, 29

the sum is: 153

with my code I've managed to get 8,11

To get the sum, I am restricted to using a "for" loop. For sequence, I am using a while. I am trouble developing the while loop to display the sequence and getting the sum for the for loop.

#include <iostream>
#include <cmath>
#include <stdlib.h>
using namespace std;
int main() {
double a, d, n,i,sum,j;

[Code] ....

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C++ :: Append Suffix To String With Pointer Arithmetic

Mar 1, 2013

Dynamic memory allocation and pointer arithmetic with char arrays.

The class was given to me in a very basic skeleton form with prototypes but no implementations, along with a test function to test my implementations. I CAN NOT use any C String functions in this assignment.

The part of the program which is troubling is the append function, which just appends a parameter string215 object to the end of the current string215 object.

// Add a suffix to the end of this string. Allocates and frees memory.
void string215::append(const string215 &suffix) {
char *output = new char[str_len(data)+suffix.length()+1];
for(int x = 0; x < str_len(data); x++) {
*output = *data;

[Code]...

This portion of the code is tested in the 13th test of the test function as shown here:

string215 str("testing");
...

// Test 13: test that append works in a simple case.
curr_test++;
string215 suffix("123");
str.append(suffix);
if (strcmp(str.c_str(), "testing123") != 0) {
cerr << "Test " << curr_test << " failed." << endl;
failed++;
}

Here is the description of the append class: Add the suffix to the end of this string. Allocates a new, larger, array; copies the old contents, followed by the suffix, to the new array; then frees the old array and updates the pointer to the new one.

My program aborts at the very end of the append function execution with the error message:

Debug Assertion Failed!

Program: [Source path]dbgdel.cpp
Line: 52

Expression: _BLOCK_TYPE_IS_VALID(pHead->nBlockUse)
...

Abort || Retry || Ignore

Here's a pastebin of the .cpp and .h file for this program

string215.cpp: [URL] ....
string215.h: [URL] .....

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C++ :: Perform Arithmetic Operations With Template Parameters?

Jul 13, 2013

how to use template parameters to perform arithmetic operations on objects.

I feel that it would best to demonstrate my issue rather than try and explain it.

Sample:

// Fundamental object structure
template<int T> struct myInt
{
myInt() { value = T; };

[Code]....

What I don't know is how to get a hold of the T variable to add them through the 'add' structure. Also, might any of this have to do with sequence wrappers?

seq_c<T,c1,c2,... cn> is essentially what I'm thinking of. Where T in this case is the type and c to the nth c are the values.

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C :: How To Do Arithmetic On Structure Members Read From A Text File

May 19, 2014

I am trying to use arithmetic on structure members read from separate text files into separate functions. I'm trying to do the math in the main function after calling the other two functions. I'm trying to divide nato_attack by pact_defence.

The warning I'm getting is: both are being used uninitialized in this function.

The goal is to read/write the info in the text files and to use them as any other variable, i.e. add, subtract, etc. in other locations in my code, i.e. functions, modules.

I "borrowed" most of this code from a youtube lesson and modified it for my needs.

Below is the contents of the two text files and my code.

This is for NATO
6
12 4th_mech_div mech div 14 16 7
12 5th_mech_div mech div 10 8 7
12 3rd_mech_div mech div 5 6 6
12 1st_mech_div mech div 4 6 7
12 2nd_mech_div mech div 12 14 7
12 6th_mech_div mech div 8 12 6

This is for Pact
3
10 1st_Guards armor div 12 8 6
10 2nd_Guards armor div 12 9 6
10 3rd_Guards mechanized div 10 9 6

Code:
#include <stdio.h>
#include <stdlib.h>
typedef struct {
char *unit_id;
char *unit_type;
char *unit_size;

[Code] ....

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C++ :: Why Are Arithmetic Operations Like Division And Multiplication Invalid On Pointers

Feb 15, 2013

why are the arithmetic operations like division(p/q) and multiplication(p*q) invalid on pointers?.here p and q both are pointers .

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C++ :: Evaluating Arithmetic Expressions Using Recursive Descent Parser?

Feb 25, 2013

I have the following code to calculate arithmetic expressions :

#include <iostream>
using namespace std;
using namespace std;
const char * expressionToParse = "6.5-2.5*10/5+2*5";
char peek(){
return *expressionToParse;

[code]....

The problem is that it does not work properly with decimal numbers for example it evaluates 6-2*10/5+2*5 = 12 which is correct but for 6.5-2.5*10/5+2*5 it returns 6 instead of 11.5 .

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C++ :: Crypt Arithmetic Puzzle - Replace Each Letter As S Number

Oct 28, 2013

Dont know how to replace each letter as s number ... this is the question i was given ...

In cryptarithmetic puzzles, mathematical equations are written using letters. Each letter can be a digit from 0 to 9, but no two letters can be the same. Here is a sample problem:

SEND + MORE = MONEY

A solution to the puzzle is S = 9, R = 8, O = 0, M = 1, Y = 2, E = 5, N = 6, D = 7.

Write a program that finds a solution to the cryptarithmetic puzzle of the following:

TOO + TOO + TOO + TOO = GOOD

The simplest technique is to use a nested loop for each unique letter (in this case T, O, G, D). The loops would systematically assign the digits from 0 to 9 to each letter. For example, it might first try T=0,O=0,G=0,D=0, thenT=0,O=0, G = 0, D = 1, then T = 0, O = 0, G = 0, D = 2, etc., up to T = 9, O = 9, G = 9, D = 9. In the loop body, test that each variable is unique and that the equation is satisfied. Output the values for the letters that satisfy the equation.

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C/C++ :: Multiplication And Division Operation Not Allowed With Pointer Arithmetic?

Jul 28, 2013

C++ only allow addition and subtraction operation with pointer .why multiplication and division is not allowed? Then how to perform multiplication and division with pointer

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C++ :: Allow Users To Enter Any Two Positive Numbers And Then Display Results - Arithmetic Operators

May 14, 2013

The Program must allow users to enter any two positive numbers and then display the results.

#include <iostream>
using namespace std;
class ArithmeticOperators{
private:
int x;
int y;
public:
void set_values();

[Code] .....

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C :: Loop Does Not Work And Program Quits Without Displaying For Loop Function

Oct 13, 2014

We are making a program--but every time we input a value for scanf, the following for loop does not work and the program quits without displaying the for loop's function. We are not getting any errors.

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C# :: Use Loop To Load Two Forms Back And Forth Then Stop At Loop 4

Feb 15, 2015

I have tried to submit this topic before but i didn't submit my whole code and it was removed. So here it is. All I am trying to do is load form2 from form1 then back to form1 from form2 for a certain number of times the get out of the loop. I am new to C-Sharp and it seems as though I cant seem to figure out a way to do this.

Here is form1 and form2 code. I have commented out a few things I have tried.

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;

[Code]....

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C :: Extra Loop Being Executed In Do-while Loop

Jul 1, 2013

Code:
#include <stdio.h>
#include<ctype.h>
void try5t(){

char choice;
int choiceint;

[Code] .....

Loop is repeated an additional time as shown in the screenshot:

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