Compilare: main.cpp: In function 'void debug()': main.cpp:537:23: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(f1, "%d", &x); ^ main.cpp:538:23: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(f2, "%d", &y); ^ main.cpp: In member function 'char InParser::read_ch()': main.cpp:417:38: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fread(buff, 1, 4096, fin); ^