Compilare: main.cpp: In function 'void read_data(char**, char**, const char*)': main.cpp:11:25: warning: ignoring return value of 'char* fgets(char*, int, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fgets(buffer, lMax, fp); ^ main.cpp:15:25: warning: ignoring return value of 'char* fgets(char*, int, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fgets(buffer, lMax, fp); ^