main.c: In function 'main':
main.c:5:13: warning: initialization of 'int' from 'char *' makes integer from pointer without a cast [-Wint-conversion]
    5 |     int x = "hello";
      |             ^~~~~~~
main.c:6:5: error: 'y' undeclared (first use in this function)
    6 |     y = 3;
      |     ^
main.c:6:5: note: each undeclared identifier is reported only once for each function it appears in
util.c: In function 'parse':
util.c:12:9: warning: unused variable 'tmp' [-Wunused-variable]
   12 |     int tmp;
      |         ^~~
