Eroare de compilare: user.c: In function ‘main’: user.c:38:2: warning: implicit declaration of function ‘fopen_s’ [-Wimplicit-function-declaration] fopen_s(&in, "bfs.in", "r"); ^ user.c:42:2: warning: implicit declaration of function ‘fscanf_s’ [-Wimplicit-function-declaration] fscanf_s(in, "%d%d%d", &n, &m, &S); ^ /tmp/ccZ2PgjD.o: In function `main': user.c:(.text.startup+0x4c): undefined reference to `fopen_s' user.c:(.text.startup+0x68): undefined reference to `fopen_s' user.c:(.text.startup+0x95): undefined reference to `fscanf_s' user.c:(.text.startup+0xc8): undefined reference to `fscanf_s' collect2: error: ld returned 1 exit status