Compilare: user.cpp: In function ‘int main()’: user.cpp:15:13: warning: unused variable ‘c’ [-Wunused-variable] int n,m,c=0,s=0,r,poz; ^ user.cpp:15:21: warning: variable ‘r’ set but not used [-Wunused-but-set-variable] int n,m,c=0,s=0,r,poz; ^ user.cpp:13:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("movedel.in","r",stdin); ^ user.cpp:14:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("movedel.out","w",stdout); ^ user.cpp:16:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&n,&m); ^