foo.cc: In function 'int main()':
foo.cc:7:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
7 | for(int i=0;i<s.size();i++)
| ~^~~~~~~~~
foo.cc:9:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
9 | if(i==s.size()-2&&s[i]=='e'&&s[i+1]=='r')
| ~^~~~~~~~~~~~
foo.cc:11:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
11 | if(i==s.size()-2&&s[i]=='l'&&s[i+1]=='y')
| ~^~~~~~~~~~~~
foo.cc:13:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
13 | if(i==s.size()-3&&s[i]=='i'&&s[i+1]=='n'&&s[i+2]=='g')
| ~^~~~~~~~~~~~
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