Compilare: main.cpp: In function 'int main()': main.cpp:138:26: warning: format '%s' expects argument of type 'char*', but argument 3 has type 'char (*)[21]' [-Wformat=] scanf("%d %s",&tip,&cuv); ^ main.cpp:121:31: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("trie.in","rt",stdin); ^ main.cpp:122:33: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("trie.out","wt",stdout); ^ main.cpp:138:27: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d %s",&tip,&cuv); ^