Compilare: main.cpp: In function 'void cer0(trie*, int)': main.cpp:17:10: warning: comparison of integer expressions of different signedness: 'int' and 'size_t' {aka 'long unsigned int'} [-Wsign-compare] 17 | if(i < strlen(s)){ | ~~^~~~~~~~~~~ main.cpp: In function 'void cer1(trie*, int)': main.cpp:26:10: warning: comparison of integer expressions of different signedness: 'int' and 'size_t' {aka 'long unsigned int'} [-Wsign-compare] 26 | if(i < strlen(s)){ | ~~^~~~~~~~~~~ main.cpp: In function 'void cer2(trie*, int)': main.cpp:34:10: warning: comparison of integer expressions of different signedness: 'int' and 'size_t' {aka 'long unsigned int'} [-Wsign-compare] 34 | if(i < strlen(s)){ | ~~^~~~~~~~~~~ main.cpp: In function 'void cer3(trie*, int)': main.cpp:52:14: warning: comparison of integer expressions of different signedness: 'int' and 'size_t' {aka 'long unsigned int'} [-Wsign-compare] 52 | if(i < strlen(s)){ | ~~^~~~~~~~~~~ main.cpp:56:13: warning: comparison of integer expressions of different signedness: 'int' and 'size_t' {aka 'long unsigned int'} [-Wsign-compare] 56 | if(i<strlen(s) && r->nr){ | ~^~~~~~~~~~