Main.c: In function ‘main’:
Main.c:22:6: warning: implicit declaration of function ‘scanf_s’; did you mean ‘scanf’? [-Wimplicit-function-declaration]
22 | scanf_s("%c", &p[i*c + j]);
| ^~~~~~~
| scanf
Main.c:7:2: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result]
7 | scanf("%d", &r);
| ^~~~~~~~~~~~~~~
Main.c:13:4: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result]
13 | scanf("%d", &c);
| ^~~~~~~~~~~~~~~
Main.c:94:4: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result]
94 | scanf("%d", &r);
| ^~~~~~~~~~~~~~~
/usr/bin/ld: /tmp/ccmMzMUd.o: in function `main':
Main.c:(.text.startup+0xd6): undefined reference to `scanf_s'
collect2: error: ld returned 1 exit status