/in/argHistogram.c: In function 'isWordInList':
/in/argHistogram.c:26:13: error: implicit declaration of function 'strcasecmp'; did you mean 'strncmp'? [-Werror=implicit-function-declaration]
         if (strcasecmp(word, wordList[i]) == 0) {
             ^~~~~~~~~~
             strncmp
cc1: all warnings being treated as errors