Compilare: user.cpp: In function ‘int meet(punct, punct)’: user.cpp:10:7: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if(a.x==b.x) ^ user.cpp: In function ‘int main()’: user.cpp:26:18: warning: unused variable ‘l1’ [-Wunused-variable] int n,m,nr,x,l1,l2,mij,elem,i; ^ user.cpp:26:21: warning: unused variable ‘l2’ [-Wunused-variable] int n,m,nr,x,l1,l2,mij,elem,i; ^ user.cpp:26:24: warning: unused variable ‘mij’ [-Wunused-variable] int n,m,nr,x,l1,l2,mij,elem,i; ^ user.cpp:24:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("puncte.in","r",stdin); ^ user.cpp:25:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("puncte.out","w",stdout); ^ user.cpp:28:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&n,&m); ^ user.cpp:30:38: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&p[i].x,&p[i].y); ^ user.cpp:47:23: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&x); ^