C/C++ :: How To Sort String Arrays Alphabetically
May 9, 2014
I have a homework assignment in C++ where I have to: "Write a program which asks user to input 10 students names. Store them in an array. Convert all the names to UPPERCASE without using any built-in functions. You must write the function to do that yourself. Lastly, sort the name in alphabetic order."
Here is my code so far, but my program won't compile, and the message it gives me is gibberish.
#include <iostream>
using namespace std;
void sortNames(string name[], int cap);
void toUpper(string name[]);
int minIndex(string name[], int i);
void sort(string name[]);
void swap(string name[], int i, int j);
[Code] .....
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Feb 25, 2014
I need to sort the array alphabetically but I really do not how. I tried to do it below but it didn't work.
#include <iostream>
#include <fstream>
#include <string>
using namespace std;
void sort(ifstream& infile){
int number;
infile>>number;
[Code]...
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May 25, 2013
I'm using a database and im trying to sort a 2D array info[51][10] that contains 51 pieces of records and 10 different fields for each record. And, now I'm trying to sort a desired field in the 2D array alphabetically.
However, the other fields within the same record should be swapped together. (So that the information of the same records stays together).
Also, I am constantly experiencing a run-time error. Sometimes my program works sometimes the whole thing crashes... By opening the code in different folders sometimes works. But the problem is still here. Is there any way to fix this error?
bool swapped =true;
int j=0;
string tmp[10];
swapped =true;
j=0;
[Code] .....
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Mar 16, 2014
is this correct? I used this sorting with numbers i don't know if it is the same with strings. When I run it, there are no errors detected, but when i try to view it, the inputs does not appear.
void add(node **h, node **t){
node *temp, *ptr;
char s[20];
temp = (node*) malloc(sizeof(node));
printf ("-INSERT-");
printf("Fruit: ");
scanf("%s", temp->fruit);
[Code] .....
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Sep 14, 2013
I want to compare alphabetically two arrays. I try this:
char a[10] = "AABC";
char b[10] = "ZABC";
if(a > b) cout << a;
else cout << b;
But it always outputs a. How can I compare char arrays?
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Nov 7, 2014
I wish to sort a string array alphabetically and im not sure if i am doing it right. for example:
string a[5]; //initial array
string b[5]; //sorted array
int index = 0; //index of b array
for (int i = 0; i < 5; i++){
for (int j = 0; j < 5; j++){
int c = 0;
[Code] ....
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Mar 28, 2014
I am doing a homework assignment for my class were I have to ask the user for a name of student then use linear search and then display the students name and mark, afterwards I need to sort and then ask the user again for a name and this time use binary search.
The only problem is when I enter the same student in linear search and binary search I get different marks for the student. For example: If I enter Pore,Bob I get a class mark of 91, Then is sort the names and marks array and now when I enter Pore,Bob for the binary search I get a class mark of 77 instead of 91? I there way to make it so the marks array corresponds to the names array?
void selectionSort(string names[], int marks[],int numElts) {
//Sort the names array
int startScan, minIndex;
string strName;
for(startScan = 0; startScan < (numElts - 1); startScan++)
[code].....
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Mar 31, 2015
I can write code that can sort arrays with Bubble, Selection and Insertion algorithms but I'm not sure how to have them be called and return a value 3 different times with 3 different sizes. For example, I need it to return 10, 100 and 1000 but I'm stuck.
#include <stdio.h>
void selectionSort (int list[], int last);
int main()
[Code].....
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Apr 9, 2014
I have been trying to merge the two arrays in merge sort but I am not able to do so. I am getting only half of the array.
Code:
int i,j,k,a[100],n,temp;
printf("Enter array size: ");
scanf(" %d",&n);
printf("
Enter the numbers:");
[Code] ....
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Apr 15, 2015
Been working on this program for a while. It's currently broken in several parts but it at least reads and stores the data into the arrays correctly. The problem is writing the sort function and the swap function. The other problem is writing both of these to keep the correct ages with the correct names.
/*
Write a program to allow the user to enter up to ten people with their age.
The names will be a full name consisting of a last, possibly a middle initial, and a first name.
The full name will be no longer than 40 characters in length.
The full will be stored in an array of strings, a two dimensioned array of characters.
The ages will be stored in an array of integers. Manage the arrays as parallel arrays.
Data entry will be from the keyboard and will read the full name followed by the age.
Data entry will terminate when the arrays are full or when nothing is entered for the full name.
Use a subroutine to enter the data and pass the arrays to the subroutine, do not use global arrays.
Once the data is completely entered, use another subroutine to print out the arrays to the screen.
Then use a subroutine to sort the data on the full names, ascending order.
Reuse the print subroutine and print the sorted data out to the screen.
Write another subroutine which sorts the data on age as the primary sort and full name as the secondary sort.
Finally reuse the print subroutine to print the data to the screen.
The main program will call the data entry function, followed by the print function, the name sort function, the print
function, the age sort function and finally the print function.
All data will be passed to the functions, no global data.
*/
#include <stdio.h>
#include <string.h>
#include <stdio.h>
#define SIZE 5
void input(char fullname[][25], int age[]);
void output(char fullname[][25], int age[]);
[Code] ....
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Oct 27, 2013
I'm trying to write a code that takes two arrays from the user (presumably in ascending order) and then passes the sizes of both arrays and a pointer to each to a separate "int* mergeArrays" function that will merge sort the two. I've written a lot of the code, but I can't get it to compile. I get errors: lab6.c: In function "main":
lab6.c:31:14: error: expected expression before "int"
mergeArrays(int* firstArray, int size1, int* secondArray, int size2);
^
lab6.c:31:14: error: too few arguments to function "mergeArrays"
[Code] ....
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Jul 15, 2014
I'm still fairly new to c++ and am having trouble with dynamic arrays. My task is to create an array for test scores. The user needs to define the size of the array and then input data to later sort and calculate the average.
Below is what I have so far. I am struggling with the user input part. I receive the following errors for the data input of the individual scores:
"error C2108:subscript is not of integral type"
"IntelliSense:expression must have integral or unscoped enum type"
Code :
#include<iostream>
#include<iomanip>
using namespace std;
int main() {
//user input total number of scores
cout<<"Please enter the total number of test scores."<<endl<<endl;
[Code] ....
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Jan 19, 2014
i am currently using a comparator function in STL map for sorting date of string data type in ascending value. My dates are in this format for e.g. 15OCT1990, 13SEP1980 and etc. I am using substring to split up the string so that i can compare day, month, year separately. Right now i have problem comparing the month portion because alphabetically "FEB" comes before "JAN".How can I make a fixed substring position of (2,3) which is my month value to accept that string value of JAN comes before FEB,AUG,DEC for e.g?
struct sortMapDaily: public std::binary_function <bool, std::string, std::string>
{
bool operator() (const std::string& lhs, const std::string& rhs)
{
[Code].....
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Apr 7, 2012
I Need to write a function using C wherein I should do the following:
(i) The function will receive a string in a character pointer
(ii) This string will adhere to the following structure:
"Kentucky+New York+Arizona+Nevada"
The number of states can differ from 4 to 50
The delimiter between States can differ from '+' to ',', hence I would like to pass the delimiter to the function.
(iii) This string should then be sorted alphabetically from left to right.
The above example would then become: "Arizona+Kentucky+Nevada+New York"
(iv) This string needs to be returned from the function using a character pointer.
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Mar 26, 2014
My program will scan a message sent over Steam (An online game distributor ) and I want it to check if the Message contains one of the elements in the array. I want it to compare the String of the message to the values in the String array. I have tried looking into it but have unfortunately found nothing that would go along with my program outline. Here is my code so far:
if (add == true) {
string[] itemNames = { "keys", "tickets", "nametags", "descriptiontags" };
string[] splitmessage = message.Split(' ');
foreach (string word in splitmessage) {
int strNumber;
[Code] .....
I am hoping for this to look like the picture of the code I wrote in the Attachments. [URL] .....
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Dec 10, 2014
I've tried searching for answers around the web but everyone is using syntax that We haven't been taught before in class yet. I understand that the string library is probably the most efficient way of doing this but is there a way without using that library? Like using if, for, while etc. instead?
I've been told that using anything else other than the string syntax is far to complex but I think the more complex it is the more I will understand it.
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Apr 25, 2013
I want to create 2 functions to (1) convert a passed string into proper case (capitalize the first alpha character of a string and every alpha character that follows a non-alpha character); (2) sort the array of names (after it has been converted to proper case).
I tried these two:
console.writeline (lower.toUpper());
void bubblesort (string array[],int length);
but I don't know if they are good.
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Jan 18, 2015
I understand multimaps are key ordered. I have no problems with ints but when I put my char arrays in they are not alphabetically ordered. I must use char array and not <string>. Is it possible to alphabetically order them with char*
39 int c;
40 User *user;
41 char nameH[200];
42 char line[200];
43 int ageH;
44 double wH;
[code]....
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Aug 30, 2014
I'm trying to write a program that reads in from a .txt file the movie title, rating, director, actors etc. All I want to do is to just sort movie titles alphabetically and print all its attributes(director, actors). I tried using sort( movies.begin(), movies.end()) method, but it doesn't work.
here's my code btw:
#include <iostream>
#include <string>
#include <vector>
#include <fstream>
#include <algorithm>
#include <iterator>
#include "Movie.h"
[Code]...
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May 11, 2014
I'm trying to finish this project which is supposed to read two files, and merge them alphabetically. I've written this code, and it compiles. But it isn't actually doing anything??The console opens and closes immediately upon running.
Code:
#include <iostream>
#include <fstream>
#include <cstdlib>
#include <string>
using namespace std;
#define hisFamily "The Adopted.txt" //His family
#define herFamily "The Originals.txt" //Her family
#define ourFamily "The Big Picture.txt" //Our family
[Code] ....
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Aug 25, 2014
I am reading a file and storing the data (all strings) into a vector. How would I sort this alphabetically?
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Feb 25, 2013
I'm trying to arrange names alphabetically from a text file. Inside my textfile, it's like : "John", "Edward", "Peaches", "Anna"... etc.(It has thousand more names, all with quotations, separated by comma and I think it's not typed line by line... but using only one line). How can I read each name separately?
this code, it works if the text file contains names separated by lines and without commas and quotations. I do not know with the case I've stated above.
string numbers[1000];
string line;
string number;
string y;
string x;
int z = 1;
ifstream myfile;
myfile.open("names.txt");
[Code]...
This only shows the data inside text file. I'm new in c++.
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Feb 25, 2013
A teacher has asked all her students to line up single file according to their first name. For example, in one class Amy will be in front of the line and Yolanda will be at the end.
Write a program that will read in a file of names. Names should be read until there are no more names to be read. Use LineUp.txt as a test file for your program.
Once all the names have been read in display which student will be at the front of the line and which one would be at the end of the line. You may assume that no two students have the same name.
These are the name in the LineUp.txt file if needed:
Cooper
Gavin
Joseph
Sierra
Kacie
Dylan
Kaylee
Will
and so on .....
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Jun 2, 2013
I am encounter with string and integer.
The code line 10 : sum += week[x] .. not match for operator += because sum(int) and week(string).
#include <iostream>
using namespace std;
int main() {
string week[7] = {"Monday","Tuesday","Wednesday","Thursday","Friday","Saturday","Sunday"};
[Code] ....
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Oct 23, 2014
understanding how to do loops with string arrays.
If I have few string arrays with some elements, for example:
string pizza[3]= {"ham", "tomato", "chees"};
string pasta[3]= {"tomato", "chicken", "olive"};
I wonder how, if I was to ask user for example:
string ingredient;
cout << " Please type an ingredient: ";
cin >> ingredient;
If user was to type in tomato, how can I loop it, to get an output like:
Pizza and pasta have tomato as an ingredient.
Is there any other way, to get the same result for this kind of problem.
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Apr 2, 2014
Write a function to read and display the contents of names and marks. You then ask the user for a name and using the linear search return the index to the user. If -1 is returned then the name is not in the file. Otherwise write out the name and mark for that student.
Next, sort the arrays, write them out and then ask the user for a name to search for. This time use the binarySearch to return -1 or an index. Display the student's name and mark if found.
void getNames(ifstream& inStream, string names[], int marks[], int numElts);
int linearSearch(const string names[], int numElts,string who);
int binarySearch(const string names[], int numElts,string who);
void selectionSort(string names[], int marks[],int numElts);
void displayData(const string names[], const int marks[], int numElts);
[Code] ....
Now I have worked up some stuff in parts but I am so lost and confused with these specific requirements: Previous questions asked me to sort out a linear search, a binary search and
LINEAR SEARCH:
int searchList(int list[], int numElems, int value) {
int index = 0; // Used as a subscript to search array
int position = -1; // To record position of search value
bool found = false; // Flag to indicate if value was found
[Code] ....
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