kpal.cpp: In function 'void read()': kpal.cpp:27: warning: unused variable 'i' kpal.cpp:27: warning: unused variable 'nr' kpal.cpp:27: warning: unused variable 'd' kpal.cpp:27: warning: unused variable 'j' kpal.cpp:29: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result kpal.cpp:30: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result