C++ :: No Operator Matches Operands
Jul 2, 2014#include <iostream>
#include <string>
#include <cstdlib>
#include <time.h>
#include <windows.h>
using namespace std;
int main() {
int x;
[Code] .....
ADVERTISEMENT
C++ :: Error With Cout - No Operator Matches Operands
Nov 11, 2013Getting error: no operator "<<" matches these operands at line 36.
#include "stdafx.h"
#include <string>
#include <iostream>
#include <ostream>
using namespace std;
struct Date {
[Code] ....
C++ :: Error / More Than One Operator Matches
Feb 9, 2015While trying to compile some codes from [URL] i encounter some compiler error mentioned which i am not able to solve.
Code:
class Foo
{
public:
static Foo* Instance();
private:
Foo() {}
static atomic<Foo*> pinstance;
[code]....
I am using vs2012, which i suppose is using c++ 11. version 17.00.6130 from cl cmd line
C++ :: Change Number Of Operands An Operator Takes?
Jan 22, 2014It is possible to change the number of operands an operator takes?
I think it is false. Am I right?
C :: Invalids Operands To Binary
Jan 1, 2015Error message：Invalids operands to binary * (have 'double(*)(double, double)' and 'double)
Red words is the error, but I unable to figure out any solution:
Code:
/* Computes the weight of a batch of flat washers*/
#include <stdio.h>
#include <conio.h>
#define PI 3.14159
/* Funtion prototype */
double find_area(double a, double b, double c, double d, int e);
[Code] ......
C :: Getting (Invalid Operands To Binary)
Jan 25, 2013I am getting this error in lines that involve "ch[_]" in lines 27, 28, 29, 33, 42, 43, 44, and 48, heres the code:
Code:
#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include <string.h>
struct integer{
int* digits;
int size;
[Code] ....
C :: Error With Invalid Operands
Dec 4, 2013The exercise consists on 3 procedures. We get the information from a .txt like these:
01/03/2011 A
02/03/2011 F
03/03/2011 C
04/03/2011 T
(...)
Simulating a Videoclub database where the letters stand for the type of movie (A=Action, T=Terror, C=Comedy, ...) and the dates they were rented.
a) How many movies from one specific genre have been rented more than 'n' times? The genre and the value 'n' must be entered by the user.
b) How many movies and which genres belong to a certain date? The date must be entered by the user.
c) Print a list that shows the number of times a movie from each genre has been rented.
So far this is what I've got:
Code:
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define MAX 100
typedef struct {
int dia,mes, any;
char genere;
[Code] ....
But right now, my main problem is that I can't even debug because i get an error in line 97 --> while (llista[i][j] != EOF) <-- saying "invalid operands to binary != (have 'lloguer' and 'int').
I've tried to cast (int) before "llista[i][j]" but it says that I'm already supposed to get an integer from that.
C++ :: Incorrect Operands And Undefined Identifier
Apr 25, 2013 I'm writing a program to read in a Master.txt file and then update it through a Transaction.txt file that contains various transaction types [Adds (A), Deletes (D), and Edits (E1-E4)]. The records in both files are in ascending order based on Item#. Ultimately, the original Master.txt and updated Master file (Master2.txt) will be merged to reflect all valid transactions, and an errorLog.txt file will be created to indicate all invalid transactions. I feel I have all of the code written correctly, but I am still getting errors on my operands and identifiers.
#include <iostream>
#include <fstream>
#include <string>
using namespace std;
struct invRecord {
string delDate;
[Code] ....
C++ :: Algorithm For Permutations Of Operands And Operators
Jun 12, 2014I can't seem to figure out the algorithm to find the right permutation(s) of operands and operators.
We basically have a list of 6 unsigned integers. Using arithmetic operations (addition, subtraction, multiplication, division), find the arithmetic expression that evaluates to a target integer.
Example:
myIntegers = {3, 7, 8, 10, 50, 100};
trgtInt = 315;
Solution is (50 + 10) * 7 - 100 - 8 + 3
We also have the following conditions:
1) Each number from the list can be used only once, but does not have to be used. i.e an expression with 5 or less numbers is acceptable
2) Operators can be used multiple times
I am thinking a parenthesis-free notation like Polish or Reverse Polish notation should be used.
C/C++ :: Invalid Operands To A Binary Expression
Jul 19, 2014I've created a class that works with vectors doing various calculations and what not. I have overloaded operators that I've created outside of the main in separate header and class files. Ive tested them and the overloaded operators work correctly when I paste them into a the main file but when I have them defined in the other class files and I try to access them in the main class I get an error saying invalid operands to a binary expression. I also have other classes with overloaded operators that work just fine in the main class so I'm not sure what I did wrong here?
This is how I have my header set up, the definitions to these are in a separate class file which I don't think I need to include considering I have them tested and working so I don't think that's the problem (correct me if I'm wrong).
class VectorClass{
friend vector<float> operator+( const vector<float>&, const vector<float>& );
friend vector<float> operator...
friend vector<float> operator...
private:
...
...
public:
...
And then in my main class looks vaguely like this
#include "Name of vector class"
int main(){
vector<float> vR, v1, v2;
v1.push_back('some value');
...
v2.push_back('some value');
...
vR = v1 + v2; // Invalid operands here
return 0;
}
And like I said, I have other classes with overloaded operators set up the same way which work fine being implemented the way I have these, so I'm not sure where the problem is at.
C/C++ :: Error Invalid Operands Of Types Void And Int
Oct 22, 2014I making a simple single number scrambler/encryptor and as I tried to build the console application the following error
occurred:
error: invalid operands of types 'void' and 'int' to binary 'operator%'
The source code is bellow.
#include <iostream>
#include <math.h>
#include <cstdlib>
using namespace std;
int main() {
int nTimer;
int nInput;
[Code]......
I am running code::blocks as my IDE on Ubuntu.
C :: How To Add Matches And Update Team Struct
Jan 21, 2013Ive got a football league program that I made to handle 10 teams. Ive got the 10 teams and it displays the league with 0 for played, won, drawn, lost and points but im having trouble actually adding matches to this? How do i add matches and update the team struct?
View 4 Replies View RelatedC++ :: No Constructor Matches Argument List
May 1, 2013These are the two errors I get...
Error1error C2664: 'ProductionWorker::ProductionWorker(std::string,int,std::string,std::string,double)' : cannot convert parameter 4 from 'int' to 'std::string'c:usersfred steinmandocumentsvisual studio 2010projectsemployee and productionworkeremployee and productionworkeremployeeproductionworker.cpp14
2IntelliSense: no instance of constructor "ProductionWorker::ProductionWorker" matches the argument listc:usersfred steinmandocumentsvisual studio 2010projectsemployee and productionworkeremployee and productionworkeremployeeproductionworker.cpp14
#ifndef EMPLOYEE_H
#define EMPLOYEE_H
#include <string>
using namespace std;
class Employee {
[Code] ....
I get a red line under the John Doe part.
C++ :: No Instance Of Constructor Matches Argument List
Mar 2, 2013While writing a code for Blackjack game in the function which makes a standard deck i am getting this message "no instance of constructor matches the argument list" I am going to show my Card.h,Hand.h, Deck.h and Deck.cpp.
Card.h
//#ifndef CARD_H
//#define CARD_H
#include <iostream>
#include <string>
#include <algorithm>
#include <ctime>
#include <vector>
using namespace std;
[Code] ....
C++ :: Take User Input As String And Test To See If Matches A Word
Dec 4, 2014I'm creating a program that takes user input in the form of a string and tests to see if it matches a word. Each correct word will increase their score by one. Here is a portion of the code that is not working.
...
else if(s == 32) {
if(!currentLetter.empty()) {
currentLetter.erase(currentLetter.length() - 2, currentLetter.length() - 1);
} if(currentLetter.compare(oWord) == 0) {
[Code] .....
To me, this looks like it should do a very simple task as intended-take a String, compare it to another, and reset the word if they match or output incorrect if not. But, I'm not sure if there is some quirk in C++ with Strings, because this code always outputs Incorrect. Please try again. and the score never increases. I also tested this by literally setting the strings equal in the code, which still resulted in it not doing what it's supposed to.
C++ :: How To Find Position Of First String In Input That Matches Regex
Oct 18, 2014i want to find the position of the first string in input.txt that matches a regex
// Input.txt
[A-Z]o
Hello everyone, i am John It is rainy today
// Here is my code
string temp; // Store "Hello everyone, i am John
//It is rainy today"
temp.resize(500);
char REGEX[500];
FILE *fi;
[Code]....
C++ :: Namespaces / Classes - Perform Operator Overload With Insertion Operator
Mar 22, 2013I'm doing a refresher for C++ and have gotten to operator overloading. I'm trying to perform an operator overload with the insertion (<<) operator, but I have encountered a problem.
Here's my class [In a header file "Shinigami.h"]
#include<string>
namespace K{
class Quincy;
class Shinigami{
friend std::ostream& operator<<(std::ostream&, const Shinigami&);
[Code] .....
If the operator function is a friend of the 'Shinigami' class, why doesn't it recognize any of it's private members? I need it to be in this file because I'm doing a bit of association with the 'Quincy' class.
I thought it was the namespace, but I included that.
Visual C++ :: Nim Project - Not Displaying Matches But Display Correct Number
Apr 9, 2013I am having one issue with my project. We are making a game of Nim code.I'm 99% done with it, i worked hard on it and i feel like i did a good job, however my project is not displaying the matches i want. For example, it display's the inital number of them 23. But once the first player subtracts a number, it doesn't display matches for player 2, just the number of matches remaining. Then as i keep running the program the same thing happens. This is what it's supposed to
output:
"Input/Output sample
WELCOME TO NIM
------- -- ---
Enter the starting player's name (no spaces)-->John
Enter the second player's name (no spaces)-->Mary
There are 23 matches.
ooooooooooooooooooooooo
|||||||||||||||||||||||
Player John please enter the number of matches to remove-->2
There are 21 matches.
ooooooooooooooooooooo
|||||||||||||||||||||
Player Mary please enter the number of matches to remove-->3
There are 18 matches.
oooooooooooooooooo
||||||||||||||||||
Player John please enter the number of matches to remove-->1 "
This is entire code.
#include <iostream>
#include <string>
using namespace std;
int main() {
// Holds variables.
[Code] ....
I will attach my code as well.ProjectNim.cpp
Visual C++ :: Circular Buffer - No Instance Of Overload Function Matches Argument List
Nov 25, 2014I'm having some issues with my code. For the produce function i am getting an error saying 'no instance of overload function produce() matches the argument list' and also for the lines buffer[head].data = message; buffer[head].time = current_time i get an error saying 'expression must have pointer to object type.
In the code i'm not sure if i passed the variables to the function correctly. I have attached the code .....
code produce.txt
C++ :: For Loop In Hangman Game - Read A Word From Text File Randomly And Matches It With Definition
Jun 26, 2014Ok here I have a program that reads a word from a text file randomly and matches it with the definition. The user has to guess what the word is according to the definition.
I'm having trouble with my for loop, I'm not getting any errors. But I just know something is off.
Here's my code:
#include <iostream>
#include <fstream>
#include <string>
#include <cstdlib>
#include <ctime>
using namespace std;
int main(){
int number;
int count = 0;
int numOfGuess = 0;
[Code] ...
This is words.txt:
apple#the usually round, red or yellow, edible fruit of a small tree
boat#a vessel for transport by water
horse#a solid-hoofed plant-eating domesticated mammal with a flowing mane and tail, used for riding
television#a system for transmitting visual images and sound that are reproduced on screens
soup#a liquid dish, typically made by boiling meat, fish, or vegetables, etc.
bottle#a container, typically made of glass or plastic and with a narrow neck
barber#a person who cuts hair
toast#sliced bread browned on both sides by exposure to radiant heat
radar#a system for detecting the presence, direction, distance, and speed of aircraft, ships, and other objects
red#of a color at the end of the spectrum next to orange and opposite violet
C++ :: File IO Inside A Class - No Instance Of Overloaded Function Getline Matches Argument List
Jan 24, 2012Hey I am trying to use the getline() function to read a line from a file. For some reason Visual Studio 2010 gives me the following error. "No instance of overloaded function "getline" matches the argument list". The piece of code that produces the error is in a class in a separate .h file and is executed as a method of the object. I'm almost certain it has something to do with either the compiler thinking I am calling another getline in a different namespace or my parameters for the function are incorrect. Here is the code:
Code:
#include <iostream>
#include <string>
#include <vector>
#include <fstream>
using namespace std;
class InsultGenerator
[Code] .....
C :: How To Use Conditional Operator
Jan 25, 2013i know
Code: (condition) ? true-clause : false-clause
but how do you use an array as the condition, how will the code look?For example i want to write
Code:
string numbers[5] = {"one","two","three","four","five"};
numbers == "one" ? thumb : again; thumb and again will replace something else. Don't worry about them.
how do i say that if the numbers array is representing "one" then it replaces as "thumb", otherwise "again".
C++ :: Class Using New Operator
Jan 5, 2015Is it usual to rely completly on the new operator in constructors/copy constructors. What if new trows an exception? The application ends and that's it? The new operator can be placed where it can't be catch like in constructor initialization list. What kind of practice I should adopt when using "new" in those cases?
The sample code below is taken from here... [URL] ....
class MemoryBlock {
public:
// Simple constructor that initializes the resource.
explicit MemoryBlock(size_t length)
: _length(length)
, _data(new int[length])
[Code] .....
C++ :: Overloading I/O Operator
Oct 26, 2013In this below example:
class Point {
private:
double m_dX, m_dY, m_dZ;
[code].....
In that situation, << does not call the overloaded function, but rather calls the << method defined in the i/o library, which prints a message to the controlling terminal. So once it prints the message to the terminal, it then returns the out instance. Why return the out instance rather than a boolean like true? As you can see from the example, once the message is printed to terminal, out is not used anymore.
C++ :: How To Overload Operator Twice
Jul 10, 2014Here's my question. I'm coding a basic Linked List class (for the purpose of understanding and having fun, I know about STL), LList.
I have overloaded the [] operator so it returns the data of the index-th node in the list, for example, if I code
LList x;
....
cout<<x[5];
it prints the data of the 5th node in the list (for fun I decided to index from 1 to infinity).
My question: Now I want to be able to assign the value to the index-th node data, using [] and =, for example, I want to be able to write:
LList x;
.....
x[5] = 121;
How can I do that?
C++ :: WAP Using Ternary Operator
Aug 13, 20141.WAP in C++ to enter marks in 3 subject and calculate percentage and grade.cond given below (Using Ternary operator)
Per Grade
90-100 A
80-90 B
70-80 C
0-70 D
2. WAP to enter 3 no.s in and print them in ascending and descending order .(Using Ternary operator)
