Compilare: user.cpp: In function ‘int main()’: user.cpp:84:9: warning: unused variable ‘taiate’ [-Wunused-variable] int taiate=0; ^ user.cpp:118:10: warning: unused variable ‘shown’ [-Wunused-variable] bool shown=0; ^ user.cpp:17:24: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d",&n); ^ user.cpp:38:39: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d %c",&val,&side); ^ user.cpp:117:24: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d",&x); ^