Compilare: user.cpp: In function ‘int main()’: user.cpp:53:16: warning: format ‘%s’ expects argument of type ‘char*’, but argument 2 has type ‘char (*)[100001]’ [-Wformat=] scanf("%s",&vec); ^ user.cpp: In function ‘int exp()’: user.cpp:48:5: warning: control reaches end of non-void function [-Wreturn-type] } ^ user.cpp: In function ‘int main()’: user.cpp:50:30: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] {freopen ("emm.in","r",stdin); ^ user.cpp:51:31: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("emm.out","w",stdout); ^ user.cpp:53:17: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%s",&vec); ^