palindrome.cpp: In function 'bool isPalindrome(std::string)':
palindrome.cpp:6:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
6 | for(int i = 0; i <str.length()/2; i++) {
| ~~^~~~~~~~~~~~~~~
palindrome.cpp: In function 'int arraylength(std::string)':
palindrome.cpp:26:10: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
26 | while(i <= str.length()) {
| ~~^~~~~~~~~~~~~~~
palindrome.cpp: In function 'int main()':
palindrome.cpp:61:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
61 | for(int i = 0; i < str.length(); i++) {
| ~~^~~~~~~~~~~~~~
palindrome.cpp:63:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
63 | for(int k=i; k < str.length(); k++) {
| ~~^~~~~~~~~~~~~~