Validation

[Geekibz]

Hi.Am Using switch -case statements (see below)and i have cases 1-5 .If the user inputs a character I want an error message printed out prompting the user to re enter his\her choice.how do i get that done?pls help

int choice;
.......
........
scanf("%d",&cho ice)
switch(choice){
case 1:printf(....
......
break;
case 2:.....

[IanWright]

Hi.Am Using switch -case statements (see below)and i have cases 1-5 .If the user inputs a character I want an error message printed out prompting the user to re enter his\her choice.how do i get that done?pls help

int choice;
.......
........
scanf("%d",&cho ice)
switch(choice){
case 1:printf(....
......
break;
case 2:.....

You need to set a default:

[CODE=cpp]

switch(choice)
{
case 1: ...
break;

case 2: ...
break;

default:
// printf or cout to display error message
break;
}
[/CODE]

Then I'd suggest using a flag, and stick it in a while loop... So create a boolean (validCharacter ), set it to true if they are in case 1-5 and false if the default is reached. Then your while loop needs to be based upon this condition.. eg..

[CODE=cpp]
while(!validCha racter)
{

}
[/CODE]