/in/foo.c: In function 'MergeSubs':
/in/foo.c:31:29: error: redeclaration of 'temp' with no linkage
   31 |                         int temp[n];
      |                             ^~~~
/in/foo.c:15:30: note: previous declaration of 'temp' with type 'int[n]'
   15 |             int end2 = i;int temp[n];
      |                              ^~~~
/in/foo.c:32:17: error: redefinition of 'k'
   32 |             int k = 0;
      |                 ^
/in/foo.c:16:17: note: previous definition of 'k' with type 'int'
   16 |             int k = 0;
      |                 ^
/in/foo.c:33:17: error: redefinition of 'j1'
   33 |             int j1 = start1, j2 = start2;
      |                 ^~
/in/foo.c:17:17: note: previous definition of 'j1' with type 'int'
   17 |             int j1 = start1, j2 = start2;
      |                 ^~
/in/foo.c:33:30: error: redefinition of 'j2'
   33 |             int j1 = start1, j2 = start2;
      |                              ^~
/in/foo.c:17:30: note: previous definition of 'j2' with type 'int'
   17 |             int j1 = start1, j2 = start2;
      |                              ^~
/in/foo.c: In function 'main':
/in/foo.c:56:13: warning: 'main' is normally a non-static function [-Wmain]
   56 |         int main() {
      |             ^~~~
/in/foo.c: In function 'main':
/in/foo.c:57:12: error: 'n' undeclared (first use in this function)
   57 |     int a1[n], a2[n];
      |            ^
/in/foo.c:57:12: note: each undeclared identifier is reported only once for each function it appears in
/in/foo.c:66:9: error: 'cout' undeclared (first use in this function)
   66 |         cout<<"%d ", a1[i]<<endl;
      |         ^~~~
/in/foo.c:66:29: error: 'endl' undeclared (first use in this function)
   66 |         cout<<"%d ", a1[i]<<endl;
      |                             ^~~~
/in/foo.c:66:20: warning: left-hand operand of comma expression has no effect [-Wunused-value]
   66 |         cout<<"%d ", a1[i]<<endl;
      |                    ^
/in/foo.c:71:20: warning: left-hand operand of comma expression has no effect [-Wunused-value]
   71 |         cout<<"%d ", a2[i]<<endl;
      |                    ^
/in/foo.c:75:1: error: expected declaration or statement at end of input
   75 | }
      | ^
/in/foo.c:75:1: error: expected declaration or statement at end of input
/in/foo.c:57:16: warning: unused variable 'a2' [-Wunused-variable]
   57 |     int a1[n], a2[n];
      |                ^~
/in/foo.c:57:9: warning: unused variable 'a1' [-Wunused-variable]
   57 |     int a1[n], a2[n];
      |         ^~
/in/foo.c: In function 'main':
/in/foo.c:75:1: error: expected declaration or statement at end of input
   75 | }
      | ^
/in/foo.c: At top level:
/in/foo.c:56:13: warning: 'main' defined but not used [-Wunused-function]
   56 |         int main() {
      |             ^~~~