foo.c: In function 'main':
foo.c:7:15: warning: left-hand operand of comma expression has no effect [-Wunused-value]
    7 |         if(x>0,y>0)
      |               ^
foo.c:9:20: warning: left-hand operand of comma expression has no effect [-Wunused-value]
    9 |         else if(x<0,y>0);
      |                    ^
foo.c:9:14: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
    9 |         else if(x<0,y>0);
      |              ^~
foo.c:10:17: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'if'
   10 |                 printf("2");
      |                 ^~~~~~
foo.c:11:9: error: 'else' without a previous 'if'
   11 |         else if(x<0,y<0);
      |         ^~~~
foo.c:11:20: warning: left-hand operand of comma expression has no effect [-Wunused-value]
   11 |         else if(x<0,y<0);
      |                    ^
foo.c:11:14: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
   11 |         else if(x<0,y<0);
      |              ^~
foo.c:12:13: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'if'
   12 |             printf("3");
      |             ^~~~~~
foo.c:13:9: error: 'else' without a previous 'if'
   13 |         else if(x>0,y<0);
      |         ^~~~
foo.c:13:20: warning: left-hand operand of comma expression has no effect [-Wunused-value]
   13 |         else if(x>0,y<0);
      |                    ^
foo.c:13:14: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
   13 |         else if(x>0,y<0);
      |              ^~
foo.c:14:13: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'if'
   14 |             printf("4");
      |             ^~~~~~
foo.c:15:9: error: 'else' without a previous 'if'
   15 |         else();
      |         ^~~~
foo.c:15:14: error: expected expression before ')' token
   15 |         else();
      |              ^

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