Compilare: user.cpp: In function ‘void up(int)’: user.cpp:12:49: warning: suggest parentheses around assignment used as truth value [-Wparentheses] while(x=(p>>1) && dist[heap[p]]<dist[heap[x]]) ^ user.cpp: In function ‘int main()’: user.cpp:82:24: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d",&t); ^ user.cpp:85:38: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d%d%d",&n,&m,&s); ^ user.cpp:87:37: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d",&cit[i]); ^ user.cpp:90:42: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d%d%d",&x,&y,&c); ^ user.cpp:12:48: warning: ‘x’ may be used uninitialized in this function [-Wmaybe-uninitialized] while(x=(p>>1) && dist[heap[p]]<dist[heap[x]]) ^ user.cpp:11:9: note: ‘x’ was declared here int x; ^ user.cpp:12:48: warning: ‘x’ may be used uninitialized in this function [-Wmaybe-uninitialized] while(x=(p>>1) && dist[heap[p]]<dist[heap[x]]) ^ user.cpp:11:9: note: ‘x’ was declared here int x; ^