Compilare: main.cpp: In function 'void build()': main.cpp:25:18: warning: comparison of integer expressions of different signedness: 'int' and 'size_t' {aka 'long unsigned int'} [-Wsign-compare] 25 | for(int i = 1; i<strlen(a); i++) | ~^~~~~~~~~~ main.cpp: In function 'void debug_t()': main.cpp:38:18: warning: comparison of integer expressions of different signedness: 'int' and 'size_t' {aka 'long unsigned int'} [-Wsign-compare] 38 | for(int i = 0; i<strlen(a); i++) | ~^~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:55:16: warning: comparison of integer expressions of different signedness: 'int' and 'size_t' {aka 'long unsigned int'} [-Wsign-compare] 55 | for(int i=0; i<strlen(b); i++) | ~^~~~~~~~~~ main.cpp:62:8: warning: comparison of integer expressions of different signedness: 'int' and 'size_t' {aka 'long unsigned int'} [-Wsign-compare] 62 | if(j == strlen(a)) | ~~^~~~~~~~~~~~