Compilare: user.cpp: In function ‘int main()’: user.cpp:26:18: warning: unused variable ‘ok’ [-Wunused-variable] int a, b, m, ok = 0, p, u, rest, cif, pas, i, i1; ^ user.cpp:26:43: warning: variable ‘pas’ set but not used [-Wunused-but-set-variable] int a, b, m, ok = 0, p, u, rest, cif, pas, i, i1; ^ user.cpp:24:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ( "multiplu.in","r",stdin ); ^ user.cpp:25:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ( "multiplu.out","w",stdout ); ^ user.cpp:27:27: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf ( "%d%d",&a,&b ); ^