foo.c: In function 'main':
foo.c:5:1: warning: implicit declaration of function 'scnaf'; did you mean 'scanf'? [-Wimplicit-function-declaration]
    5 | scnaf("%d%d%d",&a,&b,&c);
      | ^~~~~
      | scanf
/nix/store/j2gmfdd29cp3rcvghmn1a5kgcnmf8myp-binutils-2.40/bin/ld: /tmp/ccdkS5F8.o: in function `main':
foo.c:(.text.startup+0x1b): undefined reference to `scnaf'
collect2: error: ld returned 1 exit status

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