Compilare: user.cpp: In function ‘long long int binar(long long int)’: user.cpp:16:22: warning: right operand of comma operator has no effect [-Wunused-value] if(a>0){x=1,y=0,u;//x,y pt factorial ^ user.cpp: In function ‘int main()’: user.cpp:77:53: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] FILE*f=fopen("fibocel.in","r");fscanf(f,"%d",&q); ^ user.cpp:81:35: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%lld%lld",&a,&b); ^