Compilare: user.cpp: In function ‘pct intersectie(dreapta, dreapta)’: user.cpp:39:21: warning: narrowing conversion of ‘x’ from ‘int’ to ‘long double’ inside { } [-Wnarrowing] return (pct){x,y}; ^ user.cpp:39:21: warning: narrowing conversion of ‘y’ from ‘int’ to ‘long double’ inside { } [-Wnarrowing] user.cpp:21:15: warning: variable ‘c1’ set but not used [-Wunused-but-set-variable] int a1,b1,c1,a2,b2,c2; ^ user.cpp: In function ‘int main()’: user.cpp:83:31: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("nn.in","r",stdin); ^ user.cpp:84:33: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("nn.out","w",stdout); ^ user.cpp:85:27: 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:88:29: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d",&x,&y); ^ user.cpp:94:48: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d %d %d",&Xa, &Ya, &Xb, &Yb); ^