Compilare: user.cpp: In function ‘int main()’: user.cpp:79:40: warning: unknown conversion type character 0x20 in format [-Wformat=] scanf("%d% d %d %d",&l1,&c1,&l2,&c2); ^ user.cpp:79:40: warning: too many arguments for format [-Wformat-extra-args] user.cpp:76:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("poarta.in","r",stdin); ^ user.cpp:77:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("poarta.out","w",stdout); ^ user.cpp:78:31: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d %d",&n,&m,&k); ^ user.cpp:79:41: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d% d %d %d",&l1,&c1,&l2,&c2); ^ user.cpp:82:44: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&gate[i].x,&gate[i].y); ^