/in/foo.cc: In function 'int main()':
/in/foo.cc:8:16: warning: comparison of integer expressions of different signedness: 'int' and 'size_t' {aka 'long unsigned int'} [-Wsign-compare]
    8 |   for(int i=0;i<strlen(str);i++){
      |               ~^~~~~~~~~~~~
/in/foo.cc:17:17: warning: comparison of integer expressions of different signedness: 'int' and 'size_t' {aka 'long unsigned int'} [-Wsign-compare]
   17 |    for(int i=0;i<strlen(str);i++){
      |                ~^~~~~~~~~~~~