Compilare: main.cpp: In function 'int main()': main.cpp:46:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 46 | while (i < c.size()) | ~~^~~~~~~~~~ main.cpp:51:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 51 | while ((j < c.size()) && (c[j] == c[k])) | ~~^~~~~~~~~~ main.cpp:60:44: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 60 | for (j = i + 1, k = 1; ((j < c.size()) && (k < d[i])); ++j, ++k) | ~~^~~~~~~~~~ main.cpp:69:44: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 69 | while ((jj < c.size()) && (c[jj] == c[kk])) | ~~~^~~~~~~~~~