Compilare: main.cpp: In function 'int main()': main.cpp:126:20: warning: format '%s' expects argument of type 'char*', but argument 2 has type 'char (*)[400042]' [-Wformat=] scanf("%s",&str); ^ main.cpp:120:37: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("frequent.in","r",stdin); ^ main.cpp:121:39: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("frequent.out","w",stdout); ^ main.cpp:123:19: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%i",&k); ^ main.cpp:126:21: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%s",&str); ^