foo.c: In function 'Unique':
foo.c:5:13: warning: unused variable 'num' [-Wunused-variable]
5 | int num = 0;
| ^~~
foo.c: In function 'SetInter':
foo.c:39:13: warning: unused variable 'cc' [-Wunused-variable]
39 | int cc = Unique(x, c);
| ^~
foo.c: In function 'main':
foo.c:58:41: warning: unused variable 'y' [-Wunused-variable]
58 | int x = SetInter(n1, a, n2, b), y = SetInter(n1, a, n3, c);
| ^
foo.c:58:13: warning: unused variable 'x' [-Wunused-variable]
58 | int x = SetInter(n1, a, n2, b), y = SetInter(n1, a, n3, c);
| ^
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