tutorial2.c: In function ‘main’:
tutorial2.c:8:2: warning: implicit declaration of function ‘scanf_s’ [-Wimplicit-function-declaration]
scanf_s("%d", &a);
^
/tmp/cc0mzVJa.o: In function `main':
tutorial2.c:(.text.startup+0x0): multiple definition of `main'
/tmp/cc7UKK03.o:grader.c:(.text.startup+0x0): first defined here
/tmp/cc7UKK03.o: In function `main':
grader.c:(.text.startup+0x97): undefined reference to `GetMax'
/tmp/cc0mzVJa.o: In function `main':
tutorial2.c:(.text.startup+0x15): undefined reference to `scanf_s'
tutorial2.c:(.text.startup+0x4b): undefined reference to `scanf_s'
collect2: error: ld returned 1 exit status