foo.c: In function 'CountWord':
foo.c:32:13: warning: unused variable 'n' [-Wunused-variable]
   32 |         int n=0;
      |             ^
foo.c: In function 'main':
foo.c:44:9: warning: 'gets' is deprecated [-Wdeprecated-declarations]
   44 |         gets(s0);
      |         ^~~~
In file included from foo.c:1:
/nix/store/y8wfrgk7br5rfz4221lfb9v8w3n0cnyd-glibc-2.37-8-dev/include/stdio.h:605:14: note: declared here
  605 | extern char *gets (char *__s) __wur __attribute_deprecated__;
      |              ^~~~
foo.c:48:9: warning: implicit declaration of function 'Lower' [-Wimplicit-function-declaration]
   48 |         Lower(s,len);
      |         ^~~~~
foo.c:43:14: warning: unused variable 'c' [-Wunused-variable]
   43 |         char c=getchar();
      |              ^
/nix/store/74y3751gsixaz9797ib0hp7c658sp1y5-binutils-2.40/bin/ld: /tmp/ccotIzIB.o: in function `main':
foo.c:(.text.startup+0x2c): warning: the `gets' function is dangerous and should not be used.
/nix/store/74y3751gsixaz9797ib0hp7c658sp1y5-binutils-2.40/bin/ld: foo.c:(.text.startup+0x62): undefined reference to `Lower'
/nix/store/74y3751gsixaz9797ib0hp7c658sp1y5-binutils-2.40/bin/ld: foo.c:(.text.startup+0x70): undefined reference to `Lower'
collect2: error: ld returned 1 exit status

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