I am trying to make a game where you have a secret code that is coded with colors like ROYG (red,orange,yellow,green) and I am having trouble when it tells you when you have a right color in the right spot or a right color in the wrong spot when you guess a color. How can I change my code under the function int comparearray where it will compare pointers to pointers and not integers and give me the correct number of "almost" and "correct".
I'm writing a delete function for a linked list, and I'm having issues with this bit of code:
void deleteNode(int data){ node* del = NULL; t = h; n = h; while(n != NULL && n->_data != data){ t = n; n = n->next; } }
Or more precisely, this portion:
&& n->_data != data
n is my new node variable, _data is the storage variable in the private section of my class, and data is the information being searched for that needs to be deleted. Everything works without this section of the code. My assumption is that n->_data is somehow wrong, but I don't see how. I've tried everything I can think of- using parenthesis, using the variable rather than the pointer, I've tried expressing the pointer in a different way, I've tried using my t variable rather than n, and I've found examples online that use this exact same expression without any issues.
I have function that looks like this myfoo(char* Name) Now i want to compare this name to another one . But the another name is a pointer . This my code :
I'm a beginner at c++ and I need to write a program that reads a set of integers and then finds and prints the sum of the even and odd integers. The program cannot tell the user how many integers to enter. I need to have separate totals for the even and odd numbers. what would I need to use so that I can read whatever number of values the user inputs and get the sum of even and odd?
I'm a novice with C programming and i have to solve an error in the following code. The code works like you enter a password called "uoc" and it shows as OK. But surprisely when you entered another password as "Cambridge" it works fine too.
I think that the problem is in the array declaration but i'm checking resources and no success!
double x=1.00,y=2,z=4; if (y/z||++x) x+=y/z; printf("%f ",x); So (y/z||++x)
is true if at least one expression is true, that is either (y/z)!=0 or (++x)!=0 or both. I wonder how the comparison is done? Is (y/z) be truncated to integer or 0 be promoted to double?
I created a function to check whether the first character of a string is a number or not by comparing it to every base 10 digit using a for loop. If it is, the string is valid, if it is not, the string is not valid
Code: //ensure the first character is not a number int ValidFirstChar(char FirstChar) { int IsChar = TRUE, DigitCount = 0; /*boolean value indicating whether the first character is a number or not.*/
//check through all base 10 digits for (DigitCount = 0; DigitCount <= 9; DigitCount++) { if ((int)FirstChar == DigitCount)
[Code] ....
I have checked for the case where the first character is a number but it is displaying the error message for it. I have tried typecasting the char variable but that has not worked.
I'm trying to compare two float ranges and it seems to be a hit and miss. I'm trying to use a object origin and dimensions comparing it to another set for collisions.
If I have 2 arrays, say array1 = {2, 2, 4, 5, 6} which has sorted array elements and array2 = {4, 2, 6, 2, 5} that has same elements as array1 but not in sorted condition. How can I compare that both arrays have same elements. I have written the following code which works in all conditions except when array1 has two same elements and array2 has all different elements.
counter=0; for (i=0; i<5; i++) { for (int j=0; j<5; j++) if (array2[i] == array1[j]) { counter++; array1[j]=0;
I have trouble comparing two strings with strcmp. The bold part of the code are the parts that are not working and i hope somebody can explain to me what i did wrong. Goal of the code is to compare a city name with the name of already created cities and when two of them match to creat a Street between them. Depending on the street pointer different streets can be created
my vector containing all already created cities (it seem to work) std::vector<city*> citylist;//all cities
find city using strings and creating a road between them:
bool Map::add_street(Street *street, const string firsttown , const string secondtown) { city* hilfs1=Map::find_city(erste); city* hilfs2=Map::find_city( zweite); if (hilfs1==NULL || hilfs2==NULL) {return false ;} // Problem :both pointers are always NULL
[Code] ....
Here is also my implementation of the getname function :
i have 3 arrays total, 2 of them i am comparing to see if any of the values match at all, and then i am putting the value that matches into the 3rd array. currently i am trying
int isthere (int match[], int maxmatchLength, const int vec1[], int vec1Length, const int vec2[], int vec2Length) { for (i=0; i<vec1Length; i++) if vec1[i]==vec2[i]; vec1[i] = match[i]; }
But this will just match the same values are in the same spot. how do i fix it so that it compares one value in the first array to the whole second array, before going to the next number.
Lets say for example I have a BST that is sorted by char names, using strcmp. IF greater than 0 go right else go left.
I.E (this is just an example, they are not inserted correctly)
cat / dog buffalo / / fish mouse zebra snake
I wanted to make a copy of this BST IF the length of the nodes are greater than the root, how would I approach this? I kinda started on this but I'm not sure if I'm making this more difficult than it should be.
void BST::copygreater(node * root, node *& dest, int & holder) { if(!root) { dest = NULL; return; }
holder = strlen(root->name) + 1; //Don't know about this? If we do a recursive call then the value would change every call?
I have wrote the code below that compares to strings and sees if they are equals doesn't matter the order of the words . In the question we where asked not to use any library functions like the string functions in <string.h> and we have to do that all with pointers . I debugged my code and for some reason the first loop in the function keeps looping ...
#include<stdio.h> int IsEqual(char* str1,char* str2); #define SIZE 20 void main() { char str1[SIZE]="my name is monaya",str2[SIZE]="name monaya is my"; if (IsEqual(str1,str2))
I am working on a program to find uppercase, lowercase and digits in a 2D char array. When I try to use an if statement to increase the counter, I get an error "no conversion from 'int' to 'char*'". This is the if statement I am using.
int result = 1; for (int j=0;j<N;j++) { bool found = false; for (int i=0;i<N && !found;i++) { if (a[j] == b[i]) found = true; } if (!found) return 0; }
I need to create a code that compares two in arrays without sorting them. They have to be the same length and contain the same elements in any order.
every integer in a[] is also in b[] every integer in b[] is also in a[] all such common values appear exactly the same number of times in both a[] and b[]
EX: a = {1, 2, 3}, b = {2, 3, 4} return 0 a = {1, 2, 3}; b = {2, 3, 1} return 1 a = {1, 2, 2}; b = {2, 2, 1} return 1 a = {1, 2, 2}; b = {2, 1, 1} return 0 a = {1, 1, 2, 2, 2}; b = {2, 1, 2, 1, 2} return 1
I'm trying to compare two data files character by character to see if they are the same. If the files are different, the program should print out the line numbers of where they do not match. So far, I have the part where it returns 'T' for when the files are the same and 'F' when they are not. But how should I start where the program prints out the line number where the characters are different? I am thinking of an array but nor sure how to start it.
I'm writing a code generator that produces a function from the strings to the ints. I'll be using the generated code as a "from string to enum" utility. For example:
Code: enum Color { Red, Green, Blue, Banana }; // The definition of colorFromString is generated somewhere. Color colorFromString(const std::string & s);
[Code].....
The implementation of the generated code is a trie. I've seen implementations in the past (including the one at work that I'd like to replace).
Anyway, say you need to compare the region of the string
Code: const char s[] = "holiday"; from index 3 until before index 6 against the string "ida".
I can see two bits of code that my generator could produce. One is
Code: bool hasIda = std::equal(s + 3, s + 6, "ida"); and the other is Code: bool hasIda = s[3] == 'i' && s[4] == 'd' && s[5] == 'a';
The existing code generator uses the latter method, claiming (I think) that the generated instructions are more efficient on some architectures. Is there any way to determine which is better generally, or do I have to examine the assembly produced on all target platforms?
I know there is a function for comparing string but i am making it to just improve my concepts.error : 2 is coming as answer when i put same sting in both place.
I'm currently trying to learn about floating point representation in depth, so I played around a bit. While doing so, I stumbled on some strange behaviour; I can't really work out what's happening...
#include <iostream> #include <cmath> using namespace std; int main(){ float minVal = pow(2,-149); // set to smallest float possible float nextCheck = ((float)((minVal/2.0f))); // divide by two
[Code] ....
Essentially what's happening is: - I set minVal to be the smallest float that can be represented using single precision - Dividing by 2 should yield 0 -- we're at the minimum - Indeed, isZero2 does return true, but isZero returns false.
What's going on -- I would have thought them to be identical? Is the compiler trying to be clever, saying that dividing any number cannot possibly yield zero?
I am trying to compare two vectors and make a bar graph. I have tried sorting it and pushing it into another vector but this issue is when I go to output it. My logic is wrong.
I'm trying to input a html file and copy everything from that file to a new html file with some changes. I need to read the html file word by word and compare them to a file with some keywords. If a keyword matches a word in the html file then it will add italic tags around that word in the output html file. As it is now it doesn't output anything.
Logically I want to read a word from the html file and then compare it to every keyword and output the result.
fileIn = original html file keyword = keywords file outFile = html file writing to std::string str; std:: string word;
