Problem with string error checking

[darr01]

Hi, all. I'm having some problems with error checking for strings that has more than one word (i.e. sentences or phrases).

Say for example, I need the user to input a book title into an array (e.g. booktitle[40]).
I also need to do some error checking to see if the booktitle input is more than the allowed number of characters inside the array (i.e. booktitle[40]). If it is more than 39 characters, I need to notify the user than they have entered more than the number of characters allowed.

If I used scanf for input, the counting of characters would be straight forward but only the first word can be counted. Therefore, I tried to use gets or fgets, which would be able to store the whole booktitle but I am at a lost in trying to figure out how to do the above error checking.

Is there a way around it?

Thanks and regards,

Darryl HB

 

[marsd]

I saw an example that used a regexp terminated with
a newline to delimit a buffer. I am a C newbie so
I don't know if this would work, but from working with
awk and tcl,it would work fine there.

 

[LiquidBinary]

#include <stdio.h>

#define MAX_TITLE 10

void Clear_Buffer();

int main() {

char sBookTitle[MAX_TITLE+1]; //(11) The last element is
// to hold '\0'.
char cGetChar;
int iCharCount;
int iErrorFlag;
int iOK;

printf( &quot;Enter the book title (10 char max): &quot; );

iCharCount = 0;
iErrorFlag = 0;
iOK = 0;

while ( !iOK )
{

while ( 1 )
{

cGetChar = getchar();

if ( cGetChar == '\n' )
break;
else
sBookTitle[iCharCount] = cGetChar;


if ( iCharCount == MAX_TITLE )
{
iErrorFlag = 1;
break;
}
else
++iCharCount;

}



if ( iErrorFlag )
{
printf( &quot;Too many char's. Try again: &quot; );
iOK = 0;
iCharCount = 0;
iErrorFlag = 0;
Clear_Buffer();

}
else
{

sBookTitle[iCharCount] = '\0';
printf( &quot;Your string: %s\n&quot;,sBookTitle );
iOK = 1;

}



}


return 0;

}

void Clear_Buffer() {

char cBuffer;

cBuffer = 0;

while ( cBuffer != '\n' )
scanf( &quot;%c&quot;,&cBuffer );

}

Mike L.G.
mlg400@blazemail.com

 

[darr01]

Thanks, guys for your help.