c++ - Returning pointers from function gives weird numbers -

iam trying max number of array has numbers -20 30 returns weird numbers --> 2255667 impossible if going well.

int * ptomx(int a[],int n) {   int max=-100;   int *point;    for(int i=0;i<=n;i++)   {       if(max<a[i])       {         max = a[i];       }   }   point = new int;  *point = max;   return point; } 

this in main()

int maxtemp;  maxtemp=*(ptomx(a,n));  cout<<"max temp is:"<<maxtemp; 

is because pointer in function destroyed after function returns , gives random number in memory location. if thats case needs dereferenced how?

you reading values beyond end of array. these values can anything , what's causing incorrect results.

 for(int i=0;i<=n;i++)                //^^ 

should changed to

 for(int i=0;i < n;i++)