Compilare: user.cpp: In function ‘int main()’: user.cpp:104:32: warning: format ‘%d’ expects argument of type ‘int’, but argument 2 has type ‘std::vector<int>::size_type {aka long unsigned int}’ [-Wformat=] printf("%d " ,primes.size()); ^ user.cpp:74:43: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%d %d %d %d " ,&n,&t,&k,&m); ^ user.cpp:80:32: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%d " ,&a[i]); ^ user.cpp:83:32: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%d " ,&b[i]); ^