Eroare de compilare: user.c: In function ‘main’: user.c:41:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d%d",&n,&m); ^ user.c:45:15: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d",&x); ^ user.c:50:15: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d%d",&a,&b); ^ /tmp/ccwGDrHg.o: In function `main': user.c:(.text.startup+0x16c): undefined reference to `up' user.c:(.text.startup+0x2a4): undefined reference to `up' user.c:(.text.startup+0x424): undefined reference to `getans' user.c:(.text.startup+0x5ab): undefined reference to `up' user.c:(.text.startup+0x6a9): undefined reference to `up' user.c:(.text.startup+0x7cd): undefined reference to `up' user.c:(.text.startup+0x8ac): undefined reference to `up' user.c:(.text.startup+0x98e): undefined reference to `up' /tmp/ccwGDrHg.o:user.c:(.text.startup+0xa70): more undefined references to `up' follow collect2: error: ld returned 1 exit status