Thread: need help with my do...while

Hello!

I have completed a basic program, and it consists of a while loop and it runs sufficiently. I am trying to add a loop so that the user is prompted to rerun the program. This additional loop is causing unwanted behavior. I think I am just tired, but I had it fixed then broke it again. Now I am stuck.

suggestions are appreciated.

Code:

int main()
{
    char temple[15][5] = { ".-","-" };
    char input[25];
    char letnum[15] = { 'A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P',
                     'Q','R','S','T','U','V','W','X','Y','Z','1','2','3','4','5','6',
                     '7','8','9','0',' ' };
    int i = 0, j, k;
    cout << "Please enter a message to be converted to temple Code,";
    cout << "\nand no more than 50 characters in length: ";

    cin.getline(input, 15);
    while (input[i] != '\0')
    {
        for (j = 0; j < 15; j++)
        {
            if (toupper(input[i]) == letnum[j])
            {
                for (k = 0; k < strlen(temple[j]); k++)
                    cout << temple[j][k];
                cout << " ";
            }
        }
        i++;
    }

    cout << endl;
    system("pause");
    return 0;
}

I want to opt the user to run or not run the program, so I have this:

Code:

int main()

{
    char again;        //User loop option

    do     // do ... while
    {
    char temple[15][5] = { ".-","-...",};
    char input[25];
    char letnum[15] = { 'A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P',
                     'Q','R','S','T','U','V','W','X','Y','Z','1','2','3','4','5','6',
                     '7','8','9','0',' ' };
    int i = 0, j, k;
    cout << "Please enter a message to be converted to temple Code,";
    cout << "\nand no more than 50 characters in length: ";

    cin.getline(input, 15);
    while (input[i] != '\0')
    {
        for (j = 0; j < 15; j++)
        {
            if (toupper(input[i]) == letnum[j])
            {
                for (k = 0; k < strlen(temple[j]); k++)
                    cout << temple[j][k];
                cout << " ";
            }
        }
        i++;
    }

    cout << endl;
    cout << "Do you want to run the program again? (Y/N) ";  // prompts user
    cin >> again;       // input

} while (tolower(again) == 'y');    // for case, calls 'again'

    system("pause");
    return 0;
}

When I add the do...while, it loops in an undesired way. It does not allow the user to enter values. It just skips my getline and goes to the cin>>again.

It may be easier if you move your original working code into a function, then call the function from main within the do while loop.