Main.c: In function 'main':
Main.c:10:17: warning: implicit declaration of function 'strlwr'; did you mean 'strlen'? [-Wimplicit-function-declaration]
   10 |                 strlwr(name);
      |                 ^~~~~~
      |                 strlen
Main.c:9:21: warning: unused variable 'len' [-Wunused-variable]
    9 |                 int len = strlen(name);
      |                     ^~~
/usr/lib/gcc/x86_64-alpine-linux-musl/12.2.1/../../../../x86_64-alpine-linux-musl/bin/ld: /tmp/ccbKjhLA.o: in function `main':
Main.c:(.text.startup+0x77): undefined reference to `strlwr'
collect2: error: ld returned 1 exit status