pulling charactors from an array

[jland68]

i have an array with 6 slots. each slot has a word in it.how do i go about Using a do while() loop to print out the 1st and 3rd letters of each word (two letters per line) using the substring function

[m4ster r0shi]

How are words represented in your program? If you do it using std::string it's piece of cake. You don't have to use any substring function, just the [] operator.

Info on std::string -> http://cplusplus.com/reference/string/string/
Info on loops -> http://cplusplus.com/doc/tutorial/control/#loops

[jland68]

this is my code so far

#include <iostream>
#include <string>
#include <fstream>
#include <iomanip>

using namespace std;

const int arraySize = 6;

int main()

{
int array[5];
int counter;
int i = 0;
string userIn;
string strArray[arraySize];
string str1, str2, str3, str4, str5, str6;

ifstream inData;
ofstream outData;

inData.open ("strIn.txt");
outData.open ("strOut.txt");




cout << "Please enter five numbers: " << endl;


for (counter = 0; counter < 5; counter++)
{
cin >> array[counter];

}

cout << endl;


cout << "The numbers you entered are: ";

for(counter = 0; counter < 5; counter = counter++)
cout << array[counter] << " ";

cout << endl;



cout << "And the numbers in reverse order are: ";

for (counter = 4; counter >= 0; counter--)
cout << array[counter] << " ";

cout << endl;

cout << "Please enter five words : " << endl;
for (counter = 0; counter < 5; counter++)
{
cin >> strArray[counter];

}

cout << endl;
strArray[5]="end_of_array";

cout << "The words you entered are: ";

for(counter = 0; counter < 5; counter = counter++)
cout << strArray[counter] << ", ";


cout << endl;

cout << "The first and third letters of each of the words you entered are : ";

cout << endl;




system("pause");

return 0;
}

[m4ster r0shi]

Use a for loop to get each word of your strArray. Then use the [] operator of the string to get the first and third character (yes, strArray[i][j] is valid syntax).

Take a look at the example here:http://cplusplus.com/reference/string/string/operator%5B%5D/

EDIT: Use either counter++ or counter=counter+1. counter = counter++ may cause an infinite loop.

[jland68]

the assignment is to use a do while loop. i am not asking for the code as this is a homework assignment but i just need the sytax for it. my teacher sent me to a site that explains extracting from a string but this is an array.
this is the assignment

Next, add code to read 5 words from the Console (user input). Store these values into an array of string []. Make sure the string[] array is large enough to hold at least 6 values. Store the string constant “end_of_array” into the last element of the array. Using a do…while() loop, print out the 1st and 3rd letters of each word (two letters per line) using the substring function.

everything i have read tells how to get the charactors i need from a string but not from an array

[m4ster r0shi]

Ok.

int i=0;
do
{
    //...
    i++;
} while (i<5);

is equivalent to

int i;
for (i=0; i<5; i++)
{
    //...
}

strArray is an array of strings, so strArray[i] is a string. Use the substr function of your strings.

Info on substr function -> http://www.cplusplus.com/reference/string/string/substr/

[jland68]

thanks