Compilare: user.cpp: In function ‘int main()’: user.cpp:46:13: warning: variable ‘m’ set but not used [-Wunused-but-set-variable] int i,n,m,aux; ^ user.cpp:48:41: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("subsecvente.in","r",stdin); ^ user.cpp:49:43: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("subsecvente.out","w",stdout); ^ user.cpp:50:31: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%s%s", (b+1),(a+1)); ^