Compilare: user.cpp: In function ‘int main()’: user.cpp:6:11: warning: unused variable ‘x’ [-Wunused-variable] int s,x,y,s2; ^ user.cpp:6:13: warning: unused variable ‘y’ [-Wunused-variable] int s,x,y,s2; ^ user.cpp:6:15: warning: unused variable ‘s2’ [-Wunused-variable] int s,x,y,s2; ^ user.cpp:9:25: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d", &s); ^