Compilare: main.cpp: In function 'int main()': main.cpp:15:15: warning: unused variable 'j' [-Wunused-variable] int m,n,i,j,l,c,lin,col,lp,cp,lf,cf,inc,sf; ^ main.cpp:15:17: warning: unused variable 'l' [-Wunused-variable] int m,n,i,j,l,c,lin,col,lp,cp,lf,cf,inc,sf; ^ main.cpp:15:19: warning: unused variable 'c' [-Wunused-variable] int m,n,i,j,l,c,lin,col,lp,cp,lf,cf,inc,sf; ^ main.cpp:13:33: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("alee.in","r",stdin); ^ main.cpp:14:35: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("alee.out","w",stdout); ^ main.cpp:16:25: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d",&n,&m); ^ main.cpp:26:33: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d",&lin,&col); ^ main.cpp:29:41: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d %d %d",&lp,&cp,&lf,&cf); ^