Compilare: user.cpp: In function ‘void heapdown(int)’: user.cpp:32:36: warning: unused variable ‘p’ [-Wunused-variable] else if (x*2+1<=n && y>z) {int p=z; bool st=false;} ^ user.cpp:32:46: warning: unused variable ‘st’ [-Wunused-variable] else if (x*2+1<=n && y>z) {int p=z; bool st=false;} ^ user.cpp: In function ‘int main()’: user.cpp:50:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("heapuri.in","r",stdin); ^ user.cpp:51:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("heapuri.out","w",stdout); ^ user.cpp:52:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&t); ^ user.cpp:55:23: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&p); ^ user.cpp:58:27: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&x); ^ user.cpp:66:27: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&x); k=poz[x]; ^ user.cpp: In function ‘void heapdown(int)’: user.cpp:33:5: warning: ‘p’ may be used uninitialized in this function [-Wmaybe-uninitialized] if (a[h[x]]>p) ^