foo.c: In function 'main':
foo.c:10:14: error: expected '=', ',', ';', 'asm' or '__attribute__' before '{' token
  int a[10005]{ '\0' }, b[10005]{ '\0' }, c[10005]{ '\0' };
              ^
foo.c:10:16: warning: statement with no effect [-Wunused-value]
  int a[10005]{ '\0' }, b[10005]{ '\0' }, c[10005]{ '\0' };
                ^~~~
foo.c:10:21: error: expected ';' before '}' token
  int a[10005]{ '\0' }, b[10005]{ '\0' }, c[10005]{ '\0' };
                     ^
foo.c:10:22: error: expected expression before ',' token
  int a[10005]{ '\0' }, b[10005]{ '\0' }, c[10005]{ '\0' };
                      ^
foo.c:10:24: error: 'b' undeclared (first use in this function)
  int a[10005]{ '\0' }, b[10005]{ '\0' }, c[10005]{ '\0' };
                        ^
foo.c:10:24: note: each undeclared identifier is reported only once for each function it appears in
foo.c:10:22: warning: left-hand operand of comma expression has no effect [-Wunused-value]
  int a[10005]{ '\0' }, b[10005]{ '\0' }, c[10005]{ '\0' };
                      ^
foo.c:12:16: error: 'a' undeclared (first use in this function)
   scanf("%d", &a[i]);
                ^
foo.c:16:16: error: 'c' undeclared (first use in this function)
   scanf("%d", &c[i]);
                ^
foo.c: In function 'SetUnion':
foo.c:28:16: warning: variable 'd' set but not used [-Wunused-but-set-variable]
  int c[10005], d[10005];
                ^
foo.c: In function 'Unique':
foo.c:56:14: error: expected '=', ',', ';', 'asm' or '__attribute__' before '{' token
  int b[10005]{ '\0' }, x;
              ^
foo.c:56:16: warning: statement with no effect [-Wunused-value]
  int b[10005]{ '\0' }, x;
                ^~~~
foo.c:56:21: error: expected ';' before '}' token
  int b[10005]{ '\0' }, x;
                     ^
foo.c:56:22: error: expected expression before ',' token
  int b[10005]{ '\0' }, x;
                      ^
foo.c:56:24: error: 'x' undeclared (first use in this function)
  int b[10005]{ '\0' }, x;
                        ^
foo.c:56:22: warning: left-hand operand of comma expression has no effect [-Wunused-value]
  int b[10005]{ '\0' }, x;
                      ^
foo.c:58:3: error: 'b' undeclared (first use in this function)
   b[i] = a[i];
   ^
foo.c: In function 'main':
foo.c:9:2: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%d%d", &n, &p, &s);
  ^~~~~~~~~~~~~~~~~~~~~~~~~~~

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