static int *row;
// queen in column c is at row[c]
-static int abs(int i) {
+static int myabs(int i) {
if(0 > i)
i = -i;
return(i);
boolean res;
while (j < i) {
- if ((row[j] == row[i]) || ((abs(row[i]-row[j])) == (i-j))) {
+ if ((row[j] == row[i]) || ((myabs(row[i]-row[j])) == (i-j))) {
res = false;
return(res);
}