Compilare: user.cpp: In function ‘int main()’: user.cpp:70:9: warning: unused variable ‘t’ [-Wunused-variable] int t,x,y,i,p,j; ^ user.cpp:70:11: warning: unused variable ‘x’ [-Wunused-variable] int t,x,y,i,p,j; ^ user.cpp:70:13: warning: unused variable ‘y’ [-Wunused-variable] int t,x,y,i,p,j; ^ user.cpp:70:17: warning: unused variable ‘p’ [-Wunused-variable] int t,x,y,i,p,j; ^ user.cpp:70:19: warning: unused variable ‘j’ [-Wunused-variable] int t,x,y,i,p,j; ^ user.cpp: In function ‘void read()’: user.cpp:34:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&n); ^ user.cpp:36:23: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&x); ^ user.cpp: In function ‘int main()’: user.cpp:71:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("biscuiti.in","r",stdin); ^ user.cpp:72:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("biscuiti.out","w",stdout); ^