Compilare: user.cpp: In function ‘int main()’: user.cpp:24:25: warning: format ‘%s’ expects argument of type ‘char*’, but argument 2 has type ‘char (*)[100005]’ [-Wformat=] scanf("%s%s",&S1,&S2); ^ user.cpp:24:25: warning: format ‘%s’ expects argument of type ‘char*’, but argument 3 has type ‘char (*)[100005]’ [-Wformat=] user.cpp:17:30: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("joben.in","r",stdin); ^ user.cpp:18:32: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("joben.out","w",stdout); ^ user.cpp:20:15: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&N); ^ user.cpp:24:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%s%s",&S1,&S2); ^