Compilare: main.cpp: In function 'int main()': main.cpp:39:18: warning: format '%s' expects argument of type 'char*', but argument 2 has type 'char (*)[100001]' [-Wformat=] scanf ("%s", &s); ^ main.cpp:44:18: warning: format '%s' expects argument of type 'char*', but argument 2 has type 'char (*)[100001]' [-Wformat=] scanf ("%s", &t); ^ main.cpp:37:34: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen ("swap.in", "r", stdin); ^ main.cpp:38:36: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen ("swap.out", "w", stdout); ^ main.cpp:39:19: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf ("%s", &s); ^ main.cpp:44:19: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf ("%s", &t); ^