Compilare: user.cpp: In function ‘int cmp(interval, interval)’: user.cpp:11: warning: suggest parentheses around ‘&&’ within ‘||’ user.cpp: In function ‘int main()’: user.cpp:16: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp:19: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result