Compilare: user.cpp: In function ‘int sol(double, double, int, double, double)’: user.cpp:15:8: warning: unused variable ‘j’ [-Wunused-variable] int i,j,salt,bucket; ^ user.cpp: In function ‘int main()’: user.cpp:43:7: warning: statement has no effect [-Wunused-value] for(n;n>0;n--){ ^ user.cpp:42:21: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d",&n); ^ user.cpp:44:48: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%lf%lf%d%lf%lf",&b,&a,&pas,&y,&x); ^