Compilare: user.cpp: In function ‘int vf(int)’: user.cpp:45:14: warning: unused variable ‘f’ [-Wunused-variable] int ls=1,f,g,rad,p1,p2; ^ user.cpp:45:16: warning: unused variable ‘g’ [-Wunused-variable] int ls=1,f,g,rad,p1,p2; ^ user.cpp:45:18: warning: unused variable ‘rad’ [-Wunused-variable] int ls=1,f,g,rad,p1,p2; ^~~ user.cpp: In function ‘unsigned int getint()’: user.cpp:82:40: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(buf,maxb,1,fin),ptr=0; ^ user.cpp:87:40: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(buf,maxb,1,fin),ptr=0; ^