Compilare: user.cpp: In function ‘bool cmp(dreapta, dreapta)’: user.cpp:16:32: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] return a.s<b.s || a.s==b.s && a.f<b.f; ^ user.cpp: In function ‘void citire()’: user.cpp:20:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d", &n,&m); ^ user.cpp:23:37: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d", &ad.s, &ad.f); ^ user.cpp: In function ‘int main()’: user.cpp:44:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("cerc4.in","r",stdin); ^ user.cpp:45:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("cerc4.out","w",stdout); ^