Compilare: user.c:3:1: warning: return type defaults to ‘int’ [enabled by default] main() { ^ user.c: In function ‘main’: user.c:11:7: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(file1, "%d", &N); ^ user.c:15:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(file1, "%d", &element); ^