Compilare: user.c: In function ‘main’: user.c:57:5: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d", &x); ^~~~~~~~~~~~~~~~~~~ user.c:61:9: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%s", ch); ^~~~~~~~~~~~~~~~~~~ user.c:62:9: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d", &nr); ^~~~~~~~~~~~~~~~~~~~ user.c:66:13: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%s", c); ^~~~~~~~~~~~~~~~~~