Compilare: main.cpp: In function 'void add(node*, char*, int)': main.cpp:28:14: warning: comparison of integer expressions of different signedness: 'int' and 'size_t' {aka 'long unsigned int'} [-Wsign-compare] 28 | if(lit_c == strlen(cuv)) | ~~~~~~^~~~~~~~~~~~~~ main.cpp: In function 'bool del(node*, char*, int)': main.cpp:43:14: warning: comparison of integer expressions of different signedness: 'int' and 'size_t' {aka 'long unsigned int'} [-Wsign-compare] 43 | if(lit_c == strlen(cuv)) | ~~~~~~^~~~~~~~~~~~~~ main.cpp: In function 'void print_ap(node*, char*, int)': main.cpp:72:14: warning: comparison of integer expressions of different signedness: 'int' and 'size_t' {aka 'long unsigned int'} [-Wsign-compare] 72 | if(lit_c == strlen(cuv)) | ~~~~~~^~~~~~~~~~~~~~ main.cpp: In function 'void common_depth(node*, char*, int, int)': main.cpp:87:14: warning: comparison of integer expressions of different signedness: 'int' and 'size_t' {aka 'long unsigned int'} [-Wsign-compare] 87 | if(lit_c == strlen(cuv)) | ~~~~~~^~~~~~~~~~~~~~