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hello
first my code
ok so i want this function to take in enter and that is all.........i just do not know how to do itCode:void delayMessage(){
char delay;
printf("\n Please press enter to return to the main menu\n");
scanf("%c",delay);
}
its just a delay message
Your code looks about OK to me - what is not working with it?
--
Mats
Code:void viewBooks(){
printf("Displaying all books...\n");
for(int i = 0; i< count;i++){
// printf("%d. Bookname %s \n Book Serial %ld\n",i+1,books[i].title,&books[i].serial);
printf("Book name : %s \n",books[i].title );
printf("Book Serial: %ld \n",books[i].serial);
printf("Authors name : %s \n",books[i].author );
printf("Book year %d\n",books[i].yearOfPublication);
}
delayMessage();
}
this is where i call the function
and this is my main method
Code:int main(){
char delay;
int numSelected,i;
do{
runMainMenu();
scanf("%d",&numSelected);
switch(numSelected){
case 1: addBook(); break;
case 2: deleteBook(); break;
case 3: viewBooks(); break;
case 4: viewABook(); break;
case 5: printf(" "); break;
}
}while(numSelected != 5);
return 0;
}
when i select the number 3 it shows the books and the mainmenu comes back.....
the delay message should come up after showing the boook details
I'm shocked. You finally missed something. ;)Quote:
Originally Posted by matsp
Code:scanf("%c",&delay);
You have to pass a the address of delay to scanf.Code:void delayMessage(){
char delay;
printf("\n Please press enter to return to the main menu\n");
scanf("%c",&delay);
}
[edit]beat[/edit]
i had that in already....and i just treid it agian...smae thing still happens
it displays the books and then the message but does not scan
but right now i realised what was wrong
and now im happy
i put a fflush(stdin);
and now it works fine
cheers for the brain storming!!!!
Code:void delayMessage(){
char delay;
printf("\n Please press enter to return to the main menu\n");
fflush(stdin);
scanf("%c",&delay);
}
MacGyver: yes, I guess I missed that one.
Molleman: I think it's a "dangling newline" that is the problem (aside from what MacGyver points out above). When you use scanf() to read in the menu-choice, there is a "newline" (as a result of the enter key being used) in the input buffer that has not yet been "used up", so when you get to the "delay" function, it just accepts the newline that was left over.
Whenever you want to use scanf() and then want to wait for a newline, you need to "clear" that from the input buffer before you can wait for another newline. The best way to do that would be to add something like this after your scanf() in the menu [and any other scanf() function call]:
--Code:int ch;
while((ch = getchar()) != '\n' && ch != EOF) ;
Mats
Sorry, you're just usually 10 steps ahead of me and at least 2x as fast. Couldn't let this one go by. :pQuote:
Originally Posted by matsp