Compilare: user.cpp: In function ‘void read_arb()’: user.cpp:19: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp:24: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp: In function ‘void rmq()’: user.cpp:66: warning: suggest parentheses around ‘-’ inside ‘<<’ user.cpp: In function ‘int main()’: user.cpp:129: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result