prog.c: In function ‘myFunction’:
prog.c:5:7: warning: unused variable ‘x’ [-Wunused-variable]
    5 |   int x = 5;
      |       ^
prog.c: In function ‘main’:
prog.c:12:16: error: ‘x’ undeclared (first use in this function)
   12 |   printf("%d", x);
      |                ^
prog.c:12:16: note: each undeclared identifier is reported only once for each function it appears in