foo.c: In function ‘main’:
foo.c:12:9: warning: ‘t’ may be used uninitialized [-Wmaybe-uninitialized]
   12 |         printf("%d",t);
      |         ^~~~~~~~~~~~~~
foo.c:3:39: note: ‘t’ was declared here
    3 |         int school_time,mum_time,plus,t,unhappy_time=8;
      |                                       ^