関連ワード:  error implicit declaration of function    error implicit declaration of function in c    error implicit declaration of function ‘system’ -wimplicit-function-declaration    error implicit declaration of function ‘system’    error implicit declaration of function ‘chmod’ -wimplicit-function-declaration    error implicit declaration of function 'getline'    error implicit declaration of function ‘wait’    error implicit declaration of function ‘strdup’    error implicit declaration of function ‘chmod’    error implicit declaration of function ‘wait’ -wimplicit-function-declaration  
結果 : error implicit declaration of function