Compilare: user.cpp: In function ‘int inters(punct, punct, punct, punct)’: user.cpp:74:29: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] return e1.x >= f1.x && e1.x <= f2.x || e2.x >= f1.x && e2.x <= f2.x; ^ user.cpp: In function ‘int main()’: user.cpp:94:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("geometry.in", "r", stdin); ^ user.cpp:95:41: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("geometry.out", "w", stdout); ^ user.cpp:97:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n); ^ user.cpp:99:69: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%lf %lf %lf %lf", &a[i].x, &a[i].y, &b[i].x, &b[i].y); ^