foo.c: In function 'main':
foo.c:9:9: warning: implicit declaration of function 'scanf_s'; did you mean 'scanf'? [-Wimplicit-function-declaration]
    9 |         scanf_s("%d", &a);//if第一个数i是质数，那么判断第二个数j。if第二数j是质数，那么要一小于二且相加等于十
      |         ^~~~~~~
      |         scanf
/nix/store/jfkmqz20q8fsaqizcml86adxqyzlwllx-binutils-2.38/bin/ld: /tmp/ccVRS01l.o: in function `main':
foo.c:(.text.startup+0x17): undefined reference to `scanf_s'
collect2: error: ld returned 1 exit status

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