Compilare: user.cpp: In function ‘int main()’: user.cpp:9:17: warning: unused variable ‘nr’ [-Wunused-variable] int x,y,con,nr,conm,n,s,connu,ga,cd,div,cop,nrdiv,conj; ^ user.cpp:9:20: warning: unused variable ‘conm’ [-Wunused-variable] int x,y,con,nr,conm,n,s,connu,ga,cd,div,cop,nrdiv,conj; ^ user.cpp:9:25: warning: unused variable ‘n’ [-Wunused-variable] int x,y,con,nr,conm,n,s,connu,ga,cd,div,cop,nrdiv,conj; ^ user.cpp:9:27: warning: unused variable ‘s’ [-Wunused-variable] int x,y,con,nr,conm,n,s,connu,ga,cd,div,cop,nrdiv,conj; ^ user.cpp:9:49: warning: unused variable ‘nrdiv’ [-Wunused-variable] int x,y,con,nr,conm,n,s,connu,ga,cd,div,cop,nrdiv,conj; ^ user.cpp:12:29: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d %d ",&x,&y); ^