How to compare character array value in C?

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Hi,

Can anyone tell me that how can I compare a value of char array?

My code sample:

C

typedef struct
{
  char pDocId[14 + 1];
} sBlocRepSRR;

typedef struct
{
  sBlocRepSRR pBlocRepSRR[MAX_REPONSES + 1];
}sRepSRR;

void func(sRepSRR * pResponse)
{
 for (i=0; i<icount; i++)
 {
   if (pResponse->pBlocRepSRR[k].pDocId_PDF < pResponse->pBlocRepSRR[j].pDocId_PDF)
   {    
        printf("k is less than j\n");
        k = j;        
   } else {   
        printf("k is greater than j\n");
        k = k;       
   }
 }
 printf("Maximum value is %s\n", pResponse->pBlocRepSRR[k].pDocId_PDF);
}

where values of pResponse->pBlocRepSRR[k].pDocId_PDF are "020000001110" / "025000000556" / "02500000204" etc...

Please help me out for getting maximum value from character array.
Thanks in advance.

Posted 31-May-10 21:35pm

Poonamol

Updated 31-May-10 21:46pm

Moak

v4

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Comments

Moak 1-Jun-10 3:48am

Updated subject, code and tags. In the future please be so kind and format your source code before you post it.

4 solutions

Solution 2

Thanks for reply, but still I am not getting correct answer.
Here is my output,

4 is total count
k document id 025000000256
j document id 025000000556
k is greater than j
k document id 025000000256
j document id 020000000204
k is greater than j
k document id 025000000256
j document id 020000001110
k is greater than j
Maximum value is 025000000256

But its not correct it should be
"Maximum value is 025000000556"

Please help me out.

Posted 31-May-10 22:08pm

Poonamol

Solution 4

Thanks for the reply srtcmp is working fine :-O

Posted 1-Jun-10 2:13am

Poonamol

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Sauro Viti · Accepted Answer · 2010-05-31T22:23:00

Solution 3

Use the strcmp function; its prototype is:

C++

int strcmp(const char *string1, const char *string2);

The returned value could be:

< 0 if string1 is less than string2

= 0 if string1 is equal to string2

> 0 if string1 is greater than string2

Posted 31-May-10 22:23pm

Sauro Viti

CPallini · Accepted Answer · 2010-05-31T21:49:00

Solution 1

Poonamol wrote:
if (pResponse->pBlocRepSRR[k].pDocId_PDF < pResponse->pBlocRepSRR[j].pDocId_PDF)

Change to:

C

long lk, lj;
lk = atol(pResponse->pBlocRepSRR[k].pDocId_PDF);
lj = atol(pResponse->pBlocRepSRR[j].pDocId_PDF);
if ( lk < lj )

:)

Posted 31-May-10 21:49pm

CPallini