c - Comparing values of two arrays -

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i have 2 arrays containing, each one, values of coordinates. in other words, first array contains values of x , second array contains values of y. goal consists of not having equal coordinates, means every coordinate must different others. tried this:

for (i=0; i<len(lrs)-1; i++) {     (j=0; j<len(lrs) ; j++) {         if ((pos.x[j]==pos.x[i+1])&&(pos.y[j]==pos.y[i+1]))            printf("1");     } }

however, there's moment values of "j" , "i" same and, therefore, condition verified, not intended. maybe i'm not thinking right way, can't figure out.

it better make inner loop j > only:

for (i=0; i<len(lrs); i++) {     (j=i+1; j<len(lrs) ; j++) {         if ((pos.x[j]==pos.x[i])&&(pos.y[j]==pos.y[i]))            printf("1");     } }

in case never check condition i==j. more on check each pair once.


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