foo.c: In function 'main':
foo.c:5:5: warning: implicit declaration of function 'sacnf'; did you mean 'scanf'? [-Wimplicit-function-declaration]
    5 |     sacnf("%d",&n);
      |     ^~~~~
      |     scanf
foo.c:8:9: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
    8 |         scanf("%d",&k);
      |         ^~~~~~~~~~~~~~
/usr/bin/ld: /tmp/ccz3qIxt.o: in function `main':
foo.c:(.text.startup+0x60): undefined reference to `sacnf'
collect2: error: ld returned 1 exit status

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