I'm trying to reverse 25 items that are in my array by using a For Loop and sending 2 of the numbers to a function at a time. The code I have right here, is not working at the moment, I cannot find the problem because i've been staring at my code for too long.
int farEnd = 24;
for (int i = 0; i < 24; i++){
Swap(intArray[i], intArray[farEnd]);
farEnd--;
}
Write the definition of a function reverse , whose first parameter is an array of integers and whose second parameter is the number of elements in thearray . The function reverses the elements of the array . The function does not return a value .
Code: void reverse(int a[], int num) { for ( int i=0; i <= num/2 ; i++){ int temp = a[i]; a[i] = a[num-i-1]; a[num-i-1] = temp; } }
This is supposed to be the answer but I'm not quite sure why this is. I understand everything up until the actual loop. For one, shouldn't "int i" be declared outside the loop (I thought perhaps this was an error in the solutions)?
The main thing that I do not understand is the conditional statement.
Code: i<=num/2;
I don't understand why the "num/2" is necessary here. Also I can't really remember but is there a command that actually reverses an array?
This is what I am supposed to be doing with this problem: Read the integer values in the file "numbers.dat" and display
* them in reverse order (that is, display the last number in the * file first, the second-to-last second and so on). Use an array to * store the values. It is safe to assume that the file contains no * more than 100 values.
I have gotten far enough to read the file and display as an array, but it is displaying vertically rather than horizontally. So it is displaying 10 and a 1 on the first line then the 0 on the second line. Before I can work the reverse part out, I need it to display each number as 10 line 1 -235 line 2 so on and so forth.
This is my code so far:
void display_array_reversed() { ifstream fin ("numbers.dat"); if (!fin){ cerr << "Error opening file" << endl; exit(1);
I am writing a code with C where I will give an integer and get the binary conversion of it.I tried to fill the binary digits into an integer array.But when I normally print it will give the proper output.But when I try to print the contents of the array it will not produce the proper result.
//Introductory20.cpp - displays the contents of a two-dimensional array, column by column and row by row
#include <iostream> using namespace std; int main() { int nums[2][4] = {{17, 24, 86, 35}, {23, 36, 10, 12}};
[Code] .....
I need modifying a program that should display the contents of the two- dimensional array, column by column and also row by row. I need to complete the program using a WHILE statement in the outer loops and a FOR statement in the nested loops.
So I insert values from a vector into a list and into a multiset, and I noticed zero is added to their contents! I had to do a whole lot of debugging to find out where the error was, how can i stop this thing? Code which generates such error...
infact i checked the content of vector ups to be sure that there was no zero in it, but after loading into list combi_t * head, it seems like there was a zero added and this is giving me errors when i call function master_roller...
Code: void ins(combi_t * &testa, int &numero, int &num, int &no) { // if (ricerca(testa, numero) == 0) //{ combi_t *temp = new combi_t;
In the function *expandArrayList and *trimArrayList I need to allocate either more memory or less memory to the given array. Right now I am using malloc on a new array and then transferring the elements of the original array to the new array, freeing the original array, and then reassigning it to the new array so it's size and capacity are either bigger or smaller than the original. I feel like there has to be a simpler way to do this with either realloc or calloc, but I cant find sufficient information on either online. Would I be able to use either to make this easier and the code cleaner?
Also, these are character arrays that contain several character arrays inside them, so I was wondering what the best way to transfer the contents of one array to the other would be. I have gone between
Code:
//example for (i=0; i<length; i++){ newarray[i] = oldarray[i]; } and Code: for (i=0; i<length; i++){ strcpy(newarray[i], oldarray[i]); }
but I'm not sure which one (if either) should work.
The 'ArrayList.h' file that is included contains the structure ArrayList, as well as the function prototypes for the functions listed below.
Here is the structure in ArrayList.h:
Code:
#define DEFAULT_INIT_LEN 10 typedef struct ArrayList { // We will store an array of strings (i.e., an array of char arrays) char **array;
So I am working on a FUSE filesystem and I currently have the need to load the contents of a text file into an array.
My array initialization looks like: char array[max_entries][PATH_MAX] = {NULL}
The reason I want to pass it by reference is that I want my function to return two values essentially. One a specific char* and the other an array like I initialized. My function proto type looks like:
char* load_meta(char* list[max_entries][PATH_MAX], char* path, int mode);
How I'm trying to call the function:
someChar = load_meta(&array, path_name, 1);
Within the function I try to edit the array by deferenceing it once, like this:
Is there some quick way of resetting the contents of an existing array to 0? Just to be clear, I'm not initializing the array, it already exists, has content and needs to be reset at 0. Is there a faster way than the code below?
I'm coding a hangman game. I'm trying to store user entries so i can output them to show the user what they have already entered. Problem is that it's not display anything at all.
I'm trying to store multiple characters of course, and then display all characters stored.
I am trying to store the contents of a text file into a char array. However the function i am using ifstream member function get(); seems to stop working when fed with certain characters. Is there another solution besides the get() function that will accept all types of characters from files?
char text[1000]; for (int i = 0; i <= textlen; ++i) { text[i] = text_in.get(); }
I need to create an overloaded cout that will print the contents of an array. So I can say output << a << endl;
And it will print the contents of the object a... which happens to be an array.
class info:
class List { public: List(); bool empty(); //returns true of false if empty void front(); //makes current position at beginning of list void end(); //makes current position at the end of list
[Code] ....
I understand this code, I am simply calling the size method from the program, but i don't know how to pass in the array so that i can print it line by line... simple syntax i am sure... but the whole thing is baffling me... I need to be able to call this on any variation of the class, so it cannot be specific to any one array.
I am unsure how to write a function which modifies the content of the 1D character array and puts all of the letter it contains into uppercase. the following are the letters which i am trying to convert.
I have an assignment that asks me to write a program which reads all lines from a text file (one by another), reverses them and write to the same file. I also have a pseudocode with which I have to work and it is as follows:
While the end of the file has not been reached
pos1 = current get position Read a line. If the line was successfully read pos2 = current get position Set put position to pos1. Write the reversed line. Set get position to pos2.
I have tried many things and the code misses letters. Below you can see my code:
Code: #include <iostream> #include <fstream> #include <string> #include <cstdlib> using namespace std; int main() { fstream file; file.open("output.txt");
[code]....
This is the text with which I have to work:
Mary had a little lamb Its fleece was white as snow And everywhere that Mary went The lamb was sure to go.
And this is what I get:
bmal elttil a dah yraM Itswons sa etihw saw eceelf Antnew yraM taht erehwyreve d T.og ot erus saw bmal eh
