Compilare: user.cpp: In function ‘int main()’: user.cpp:37:9: warning: unused variable ‘m’ [-Wunused-variable] int m,i,j,st,dr,ti,tan,ca,cb,x; ^ user.cpp:37:13: warning: unused variable ‘j’ [-Wunused-variable] int m,i,j,st,dr,ti,tan,ca,cb,x; ^ user.cpp:37:28: warning: unused variable ‘ca’ [-Wunused-variable] int m,i,j,st,dr,ti,tan,ca,cb,x; ^ user.cpp:37:31: warning: unused variable ‘cb’ [-Wunused-variable] int m,i,j,st,dr,ti,tan,ca,cb,x; ^ user.cpp:35:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("lapte.in","r",stdin); ^ user.cpp:36:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("lapte.out","w",stdout); ^ user.cpp:38:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&n,&l); ^ user.cpp:40:30: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&a[i],&b[i]); ^