Compilare: main.cpp: In function 'int main()': main.cpp:19:35: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d %d %d", &N, &L, &U); ^ main.cpp:23:32: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d", &seq.cost[i]); ^ main.cpp:25:32: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d", &seq.time[i]); ^ main.cpp:45:9: warning: 'seq.Sequence::max_ratio' may be used uninitialized in this function [-Wmaybe-uninitialized] fprintf(g, "%0.2f", seq.max_ratio); ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~