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Old 06-17-2010, 05:53 AM   #1
iqra
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Registered: May 2010
Posts: 34

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finding error


hiii...

i running a program of C heres one function in which i am getting an error.
Code:
void snmp()
{
int count;
char switch_val;
	printf(" start sending requests\n");
	printf(" select '1' to send get request\n");
	printf(" select '2' to send get next request");
	scanf( "%d", switch_val);
	
	switch(switch_val)
	{
		case '1':
			
			count=0;
			if (count==0)
			{
			get();
			}
			else getnext();
			count++;
			break;
		case '2':
			getnext();
			break;
			
					
		default:
			printf("OOooPPppssss");
			break;
	}

}
program always go in default case. i can not figure it out why it is happeing. i have used switch statements manny times but on linux i have never worked before so could not debug the error properly.

if i use integer values for cases (for exmaple case '1')
then after selecting any option it gives 'segmentation fault' error.

plzzzz tell me whats wrong with this code....!!!
 
Old 06-17-2010, 06:03 AM   #2
Gavin Harper
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Registered: Feb 2010
Location: Finland
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Posts: 169

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The ' ' around the 1 and 2 in the switch imply that the switch ases are looking for items of type char which is why it isn't matching to the switch cases.

Remove the ' ' and it will recognise switch_val as an integer
 
Old 06-17-2010, 06:24 AM   #3
iqra
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Registered: May 2010
Posts: 34

Original Poster
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switch_val is an integer
and i tried by removing ' ' it is giving segmentation fault error.

is it becasue of any problem in my get() and getnext() functions?
either choosing case 1 or case 2.... same error occurs..

if i take switch_val as a char then it keeps on going in default case
 
Old 06-17-2010, 07:38 AM   #4
crts
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Registered: Jan 2010
Posts: 1,637

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Hi,

try the following (changes in bold and red)

Code:
void snmp()
{
int count;
int switch_val;
    printf(" start sending requests\n");
    printf(" select '1' to send get request\n");
    printf(" select '2' to send get next request");
    scanf( "%d", &switch_val);
    
    switch(switch_val)
    {
        case 1:
            
            count=0;
            if (count==0)
            {
            get();
            }
            else getnext();
            count++;
            break;
        case 2:
            getnext();
            break;
            
                    
        default:
            printf("OOooPPppssss");
            break;
    }

}

Last edited by crts; 06-17-2010 at 07:42 AM. Reason: colors
 
1 members found this post helpful.
Old 06-17-2010, 08:00 AM   #5
iqra
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Registered: May 2010
Posts: 34

Original Poster
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@ crts
thnx

i just tried this and it worked fine...
anyways thanx for help..
 
Old 06-17-2010, 09:16 AM   #6
Gavin Harper
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Registered: Feb 2010
Location: Finland
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Posts: 169

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I totally missed that switch_val was declared as a char
 
  


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