Eroare de compilare: user.c: In function ‘delete’: user.c:38:4: warning: implicit declaration of function ‘halt’ [-Wimplicit-function-declaration] halt(0); ^ user.c: In function ‘main’: user.c:76:8: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d\n", &n); ^ user.c:87:9: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d ", &type); ^ user.c:89:10: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d\n", &val); ^ user.c:94:10: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d\n", &val); ^ /tmp/ccLLZEZo.o: In function `delete': user.c:(.text+0x1ce): undefined reference to `halt' collect2: error: ld returned 1 exit status