Compilare: user.c: In function ‘main’: user.c:12:1: warning: use of ‘ll’ length modifier with ‘f’ type character [-Wformat=] fscanf(file1, "%llf", &X); ^ user.c:13:1: warning: use of ‘ll’ length modifier with ‘f’ type character [-Wformat=] fscanf(file1, "%llf", &M); ^ user.c:16:5: warning: use of ‘ll’ length modifier with ‘f’ type character [-Wformat=] fprintf(file2, "%.7llf", (M-X)/M); ^ user.c:18:5: warning: use of ‘ll’ length modifier with ‘f’ type character [-Wformat=] fprintf(file2, "%.7llf", 0.0); ^ user.c:12:7: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(file1, "%llf", &X); ^ user.c:13:7: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(file1, "%llf", &M); ^