Compilare: user.c: In function ‘main’: user.c:17:8: warning: unused variable ‘f’ [-Wunused-variable] int f; ^ user.c:13:28: warning: unused variable ‘nrf’ [-Wunused-variable] int n, m, x, j, nrp = 0, nrf, v[100000]; ^ user.c:13:19: warning: unused variable ‘nrp’ [-Wunused-variable] int n, m, x, j, nrp = 0, nrf, v[100000]; ^ user.c:10:8: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(input, "%d", &t); ^ user.c:15:9: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(input, "%d%d%d", &n, &m, &x); ^ user.c:18:10: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(input, "%d", &v[j - 1]); ^