Compilare: user.cpp: In function ‘int intersectie(punct, punct)’: user.cpp:20:15: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] if(a.x==1 && (a.x<b.x && a.x<b.y) || (a.y<b.x && a.y<b.y)) ^ user.cpp: In function ‘int main()’: user.cpp:27:36: 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:28:38: 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); ^ user.cpp:30:29: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d\n", &n, &m); ^ user.cpp:32:43: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d\n", &a[i].x, &a[i].y); ^