Compilare: user.cpp: In function ‘int coliniar(coord, coord)’: user.cpp:29:20: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] if (!(x2 <= x1 && x2 >= x3 || x2 >= x1 && x2 <= x3)) ^ user.cpp:31:20: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] if (!(y2 <= y1 && y2 >= y3 || y2 >= y1 && y2 <= y3)) ^ user.cpp: In function ‘void citire()’: user.cpp:72:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n); ^ user.cpp:74:73: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] &sur1.y, &sur2.x, &sur2.y, &pos1.x, &pos1.y, &pos2.x, &pos2.y); ^ user.cpp:75:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &k); ^ user.cpp:81:33: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d", &c1, &c2); ^ user.cpp: In function ‘int main()’: user.cpp:158:33: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("ai.in", "r", stdin); ^ user.cpp:159:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("ai.out", "w", stdout); ^