I am trying to create a simple palindrome program. I get the error string subscript out of range. I believe the error is either in the while or for loops.
#include <cctype>
#include <string>
#include <iostream>
using namespace std;
//cleans string, converts to lower
bool cleanTolower(const string& s);
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I've been debugging this program since yesterday and I continue to run into a string subscript error. I pasted the code in a pastebin (it's only 400 lines), to see why I'm getting this. The problem seems to come up during a debug assertion failure.
[URL] ....
whenever I try to use either <string> or any STL container. Everyone I saw so far, says that "using a .reserve(n)" before adding items to random positions is enough. However, each time I run the code, I still get the same error, unless I actually write the memory with some initial data, and only after access random positions.I am fully aware of the fact that the STL containers and <string> are dynamic data types and memory allocation is done dynamically. However, if I need to allocate all those memory slots before knowing how many I need, would lead me to the same memory complexity as using a char [] array (which is static -- size declaration at first).
how is it possible to keep the <string> dynamic, while being able to add elements on random positions (if possible). I know the strings have the ending char '', but there should still be something that would allow it to work. Okay, long story short, here is my example. I am trying to read from file rows of data. The first char on each row represents a normal char c. The rest of the row is a string which contains numbers (integers between 1 and 250) which represent the position at which the char c (read before) will have its location.
For example the input file:
#include <fstream>
#include <deque> // for later use
#include <string>
#include <sstream>
#include <algorithm> // for later use
[code].....
The program works perfectly, if instead of text.reserve(250); I use text.resize(250);. However, what is the difference between the two? I mean, why isn't reserve enough?
I have an assignment where i have to prompt the user to enter the name of a file then open that file and read names of students and what level they are at university
eg : John Wilkins, sophomore
Dan Robertson, junior
etc..
i did the code and it compiles perfectly, but when i input the name of the file it gives me error: string subscript out of range.
here's the code:
Code:
#include <iostream>
#include <cstring>
#include <string>
#include<ctime>
#include <fstream>
using namespace std;
int * read_file(string filename)
[code]...
Im having a problem with my sneaky hangman game I feel like im really close just getting an error I can't fix. When I run it, it says something like string subscript out of range when I goggled it. it says im searching past the bounds of what it should be or something.
Also a dictionary.txt file is needed to run the program
code: [URL]
#include <iostream>
#include <string>
#include <fstream>
#include <vector>
#include <algorithm>
#include <map>
using namespace std;
int guessesUsed = 0;
int wordlength;
[code]....
I keep getting this "Debug Assertion Failed" error that says:
expression: vector subscript out of range
I tried to make the loop the same as the vector size, but I'm still getting the same errors.
void Grid::output(ostream & out) {
vector<vector<int>> grid(4);
int rows, columns;
out << " 0 1 2 3 " << endl;
out << " +---------+" << endl;
for( rows=0; rows<grid.size(); ++rows ) // make each row
[code]....
I've been getting this expression of "subscript being out of range" for my program but i'm not sure how exactly. I'm fiddling around with code, i'm trying to make a two dimensional array of random numbers, here is my code, it compiles just fine:
Code:
#include <iostream>
#include <array>
#include <random>
#include <cstdlib>
#include <iomanip>
[Code] .....
When i build this program i get no errors, however a message appears saying vector subscript out of range. What does this mean and what can i do to mkae my program work
#include <iostream>
#include <ctime>
#include <cstdlib>
#include <iomanip>
#include <cstring>
#include <time.h>
#include <vector>
using namespace std;
[Code] .....
I will try my best to describe this problem I am having because I am not sure if I can reproduce the error in a small code example as this is part of a large code project.
I have a plain std::vector which contains pointers to objects.
When attempting to delete the objects, even if I know for a fact that the std::vector has at least one object in it as shown by the debugger, I get the "Vector Subscript Out of Range" error.
I'll even do a range for loop like so:
for (auto & e : CurrentObjects) {
delete e;
}
And yet I still get the "Vector Subscript Out of Range" error. The destructor is never called for the object represented by "e" so I am not sure why I get the error.
I have the following code. however, when I debug it gives an error saying" vector subscript out of range"
Vector based mufti-dimensional arrays
Vectors are a STL container that allow you to store pretty much anything in them. When used correctly they can be very powerful containers.
They provide an added benefit that they will automatically remove the memory they use when they go out of scope. This means that objects stored within a vector do not need to be de-allocated (but pointers to objects do). You can also do some interesting things with dynamic multidimensional arrays with vectors.
For example, if you only allocate the first dimension, then use the .push_back() to add records to the 2nd dimension it's no longer a grid, but an array with a dynamically sized 2nd dimension (much like a street of buildings each with a different amount of floors).
This functionality can be achieved using pointers, but is much harder to do.
#include <iostream>
#include <vector>
#include<conio.h>
using std::vector;
using namespace std;
[code]...
My project's goal is to read some numbers from input file,then create a grid.my input file is:
2 3
3 4 5
1 2 4
first line is rows and colums. second and third line the grid location values.My code is
#include <iostream>
#include <fstream>
#include <cstdlib>
#include <string>
#include<vector>
using namespace std;
[code].....
Everything seems to be correct from my perspective. heres the program: Code: /*c program to check whether a string is palindrome or not*/
#include<stdio.h>
#include<string.h>
int main(void) {
char str[30];
int i,j,flag=0;
[Code] .....
here is my code, the issue is its not determine if the value is a palindrome or not.
// unit 5b.cpp : Defines the entry point for the console application.
//
// How to read a file
// identify the string if its a palindrome or not
//
#include "stdafx.h"
#include <iostream>
#include <cctype>
#include <fstream>
[Code] .....
I am trying to check a string to be a palindrome. I have tried using for loop but I am looking for most efficient way.
View 5 Replies View RelatedWrite a program that checks whether a string is a palindrome. A palindrome is a word, phrase, orsequence that can be read the same backward and forward.
Code:
#include<iostream>
#include<string>
using namespace std;
int main(){
[Code] .....
So I've been tasked with creating a program that checks to see whether or not a string is a palindrome. It has to remove whitespace, punctuation, and capitalization for obvious reasons. Getting some errors which I'm not sure how to correct.
On an unrelated note, while programming in the console, my cursor has turned into a gray box and replaces characters when typing, instead of pushing them forward, etc. How do I return it to normal?
#include <iostream>
#include <string>
#include <iomanip>
using namespace std;
bool isPalin(string& palin);
string cleanUp(string& palin);
[Code] .....
I am supposed to take the three string lines from a text file and then individually reverse them and state whether or not they are a palindrome. I have the three lines from the text file into string variables already but I am not sure on how to reverse them and then see if they are the same reversed(palindrome)
Here is my code so far -->
#include <iostream>
#include <string>
#include <cctype>
[Code].....
EDIT: Ignore line 123 and down in the code. That was merely test code and will not be used.
#include <stdio.h>
#include <string.h>
#include <math.h>
#include <stdlib.h>
void findPalind(char *arr) {
int i,j,n,odd,flag=0,count[26]={0};
[Code] ....
This question was asked in Hackerrank. [URL] ....
I am able to get correct output upto a input of 50000 character string, but not for 100000 character string.
I'm trying to determine the number of times I have to change each specific character in a string to make it a palindrome. You can only change a character one at a time from the end.
Example: "abc" -> "abb" -> "aba" should print 2. "aba" will print 0 because it's already a palindrome. "abcd" -> "abcc" -> "abcb" -> "abca" -> "abba" will print 4 because it took 4 changes to make a palindrome.
I'm not too sure how to approach this - I figured out the case where if it's a palindrome (if reversed string is the same) then it'll print out a 0.
int main() {
int number;
cin >> number; //expecting a number for first line user input
for (int i = 0; i < number; i++) {
string str;
[Code] ....
My program has two errors, they are intellisense:An array may not have elements of this type. and missing subscript
Code:
#define ROWS 20
#define COLLUMS 40
void MirrorArrays(char readarray[ROWS][COLLUMS], char *writearray[ROWS][COLLUMS]) {
int i,i2;
for( i = 0; i <= ROWS; i++)
[Code] .....It has both of these errors for both of my arrays.
To get a value I would always use setter and getter. Would it be much better (performance) to use vector subscript operator overloading? And does vector subscription operator overloading require a size for the vector?
vector<int> v(10);
because otherwise, it doesn't work...
I keep getting this error?
Error1error C2109: subscript requires array or pointer type
Code:
#include <iostream>
using namespace std;
void mean(int [],int);
int main() {
const int arraySize = 25;
const int patternSize = 10;
[Code] .....
Code:
#include <stdio.h>
void f( char *a ) {
((int *)a)[1][1] = 8;
}
int main() {
int a[2][3] = {
[Code] ....
3.cpp: In function 'void f(char*)':
3.cpp:5: error: invalid types 'int[int]' for array subscript
how to get this program to find the palindrome? Here is my program:
#include <iostream>
#include <string>
using namespace std;
using std::string;
[code].....
My loop keeps getting an error and I don't know why?
#include<iostream>
#include<string>
#include<algorithm>
using namespace std;
int main (){
int loop;
string word;
[Code] ....
I could not find the mistake in this program....
Code:
//cpp program to check whether a number is palindrome or not
#include<iostream.h>
#include<conio.h>
//the class
class palindrome
[Code] ....