/in/foo.c: In function 'main':
/in/foo.c:10:8: warning: 'm' is used uninitialized [-Wuninitialized]
   10 |     if (m <= 9)          printf("1\n");
      |        ^
/in/foo.c:3:9: note: 'm' was declared here
    3 |     int m;
      |         ^