Compilare: user.cpp: In function ‘double getValue(std::vector<double>, double)’: user.cpp:10:41: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < coeficients.size(); i++) { ^ user.cpp: In function ‘int main()’: user.cpp:34:31: warning: format ‘%d’ expects argument of type ‘int’, but argument 3 has type ‘double’ [-Wformat=] fprintf(out,"%d",i); ^ user.cpp:25:26: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d",&size); ^ user.cpp:28:37: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%lf",&coeficient); ^