Comparing for duplicate names

[raviufor]

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <conio.h>
#include <ctype.h>
#include <ctype.h>
#include <time.h>
#include <sys/types.h>
 
 
 
int main ( void )
{
static const char filename[] = "1.txt";
FILE *file = fopen ( filename, "r" );
int i, j;
char arra[128][128];
char line[128];
int result;
 
for(i=0; i<128; i++)
for(j=0; j<128; j++)
arra[i][j] = '\0';
 
for(i=0; i<128; i++)
line[i] = '\0';
 
if ( file != NULL )
{
 
i=0;
 
while ( fgets ( line, sizeof line, file ) != NULL )
 
{
 
strcpy(arra[i], line);
 
 
printf("array ----> %s ", &arra[i]);
i++;
 
 
 
}
fclose ( file );
}
else
{
perror ( filename );
}
 
 
return 0;
}
 

this is the coding to get values from the text file and store it in the array .... i want a little hep in this can any one help me out how to compare each and every line and remove duplicate from the text file .......... waiting for ur help thanxs in advance ..................


this code is working nice
think if input file has text
shankar
ravi
kumar
kan
ravi

the output i will get has

array -> shankar
array ->ravi
array ->kumar
array ->kan
array ->ravi


c in the above output the name ravi has been repeated 2times .is that there is any possiblitly to remove the duplicate from the list above ....... and same way explain me how the values are stored in array .plz...........

[gpraghuram]

If you want to search for duplicates in the array then you have to iterate for every element in the array and compare it with other values in the array.
If you can use C++ stl try to push the values to the set and you will end up having unique values

Raghuram

[raviufor]

no i want to do in c program only and ......... really got struck here dont know to move further ........ and can u also explain me the code above .....

[sicarie]

no i want to do in c program only and ......... really got struck here dont know to move further ........ and can u also explain me the code above .....

Did you not write the above code?

[raviufor]

Did you not write the above code?

nooooooooooooooooo i did not write can any one explain me abt it

[sicarie]

nooooooooooooooooo i did not write can any one explain me abt it

I would try to step through it logcially, and then put it into a compiler and user print statements to show the values of ALL the variables at different points (during loops, after loops, before loops, after function calls, etc...).

You should start there. After you understand what that code is doing, then you will know what you need to add to it.