/in/foo.cc: In function 'int main()':
/in/foo.cc:39:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   if (c[i].name.find("reioxzsj") != -1) {
       ~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~
/in/foo.cc:40:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    while (c[i].name.find("woc") != -1) {
           ~~~~~~~~~~~~~~~~~~~~~~^~~~~
/in/foo.cc:44:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    for (int j = 0; j < c[i].name.size(); j++) {
                    ~~^~~~~~~~~~~~~~~~~~
/in/foo.cc:52:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    while (c[i].name.find("pr") != -1) {
           ~~~~~~~~~~~~~~~~~~~~~^~~~~