Hi, can I know the coding for the below situation.

Basically, I want to ask the user to enter the desired data, for instance name. Then I proceed to ask the user to enter his age (between a certain range). The problem is that how do I prompt the user to reenter the correct data, while clearing the data that has been previously entered and displayed, and at the same time, make sure that his name is not cleared.

It goes something like this.................
__________________________________________________ _______________
Please enter your name: Jack Johnson

Please enter your age : 900

You entered over 100 years. Enter again.
__________________________________________________ _______________
Since data entered is not in the allowable range, prompt the user to enter again.
__________________________________________________ _______________
Please enter your name: Jack Johnson

Please enter your age :

__________________________________________________ _______________

All I know is that only one command can be used to clear the screen, ie, system("cls"). But if I use this, it will clear the first line as well.

Please help.

I assume you are displaying output in text mode which means you are limited to centering, indenting, & orienting text vertically. Below are various comments:

• There is little standardization of functions targeting console placement amongst the various compiler vendors. Since you have not mentioned what compiler or platform you are using, I cannot tell you the answer you are seeking.
• Basically, you need to search through your documentation for functions for outputting text to a specific (x, y) coordinate. This will get around the problem where you are having to redisplay everything that is already on the screen.
• If you cannot find such a function, upon the need to redraw the screen you will need to simply output everything that has already been displayed. You will need to retain all information which has been obtained from the user.
• If you doing this for an assignment, you will need to weigh whether you are putting too much time into details which aren't critical to the overall purpose.

At a known point in the program, at the point of entering the age for example, one possibility after to clearing the screen is to redraw everything back to the age prompt. Something like this pseudo-code: (note this is only a suggestion, other ways are possible, as ocicat pointed out)

For some, this might seem to be more hassle as it carries more variables and handling, but could potentially offer another idea. HTH

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