/in/foo.c:1:2: error: expected ';' before 'typedef'
    1 | c
      |  ^
      |  ;
/in/foo.c: In function 'main':
/in/foo.c:26:18: warning: implicit declaration of function 'atoi' [-Wimplicit-function-declaration]
   26 |     int newNum = atoi(newNumStr);
      |                  ^~~~