Compilare: user.cpp: In function ‘int main()’: user.cpp:13:9: warning: unused variable ‘n’ [-Wunused-variable] int n,m,i,j,ls,lt,cu,dr=1,p,eg; ^ user.cpp:13:11: warning: unused variable ‘m’ [-Wunused-variable] int n,m,i,j,ls,lt,cu,dr=1,p,eg; ^ user.cpp:13:15: warning: variable ‘j’ set but not used [-Wunused-but-set-variable] int n,m,i,j,ls,lt,cu,dr=1,p,eg; ^ user.cpp:13:23: warning: unused variable ‘cu’ [-Wunused-variable] int n,m,i,j,ls,lt,cu,dr=1,p,eg; ^ user.cpp:13:26: warning: unused variable ‘dr’ [-Wunused-variable] int n,m,i,j,ls,lt,cu,dr=1,p,eg; ^ user.cpp:11:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("aparitii2.in","r",stdin); ^ user.cpp:12:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("aparitii2.out","w",stdout); ^ user.cpp:14:15: warning: ignoring return value of ‘char* gets(char*)’, declared with attribute warn_unused_result [-Wunused-result] gets(si+1); ^ user.cpp:15:15: warning: ignoring return value of ‘char* gets(char*)’, declared with attribute warn_unused_result [-Wunused-result] gets(te+1); ^ /tmp/ccsKkXVv.o: In function `main': user.cpp:(.text.startup+0x56): warning: the `gets' function is dangerous and should not be used.