Compilare: user.c: In function ‘main’: user.c:12:9: warning: variable ‘maxsum’ set but not used [-Wunused-but-set-variable] int maxsum; ^ user.c:9:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fp,"%i",&n); ^ user.c:14:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fp,"%i",&k); ^ user.c:17:15: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fp,"%i",&a); ^