Finding unique elements in an string array in C

Question

C bothers me with its handling of strings. I have a pseudocode like this in my mind:

char *data[20]; 

char *tmp; int i,j;

for(i=0;i<20;i++) {
  tmp = da         


        

Answer 1

Why are you starting second loop from 1?

You should start it from i+1. i.e.

for(j=i+1;j<20;j++) 

Like if the list is

abc
def
abc
abc
lop

then

when i==4

tmp="lop"

but then the second loop starts which is from 1 to 19. This means it will get a value of 4 too at one stage, and then

data[4], which is "lop", will be same as tmp. So although "lop" is unique but it will be flagged as repeated.

Hope it was helpful.