Compilare: main.cpp: In member function 'bool Diapazon::operator<(const Diapazon&) const': main.cpp:36:56: warning: suggest parentheses around '&&' within '||' [-Wparentheses] return right < aux.right || right == aux.right && left > aux.left; ~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:50:30: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%d%d", &n, &l); ^ main.cpp:52:31: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%d", &c[i]); ^ main.cpp:56:75: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] for(int i = 1; i <= n; i++) fscanf(fi,"%d%d", &v[i].left, &v[i].right); ^