Compilare: user.cpp: In function ‘int main()’: user.cpp:85:17: warning: variable ‘n1’ set but not used [-Wunused-but-set-variable] int n,i,m,a,n1,b,j,a1,b1; ^ user.cpp:85:22: warning: unused variable ‘j’ [-Wunused-variable] int n,i,m,a,n1,b,j,a1,b1; ^ user.cpp:83:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("eliminare.in","r",stdin); ^ user.cpp:84:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("eliminare.out","w",stdout); ^