Compilare: user.cpp: In function ‘int main()’: user.cpp:15:26: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", &t); ^ user.cpp:26:36: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d%d", &n, &l); ^ user.cpp:27:29: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%c", &c); ^ user.cpp:28:32: warning: ignoring return value of ‘char* fgets(char*, int, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fgets (cuv, MAXX , fin); ^ user.cpp:20:26: warning: iteration 200004u invokes undefined behavior [-Waggressive-loop-optimizations] nrpasi[i] = 0; ^ user.cpp:18:9: note: containing loop for(int i=1;i<=MAXX+1;i++) ^