Compilare: main.cpp: In function 'int32_t main()': main.cpp:28:20: warning: comparison of integer expressions of different signedness: 'long long int' and 'size_t' {aka 'long unsigned int'} [-Wsign-compare] 28 | for (int i=1;i<=strlen(b);i++) | ~^~~~~~~~~~~ main.cpp:36:19: warning: comparison of integer expressions of different signedness: 'long long int' and 'size_t' {aka 'long unsigned int'} [-Wsign-compare] 36 | for (int i=0;i<strlen(b);i++) | ~^~~~~~~~~~