c++ - Recursively find the largest number in an integer array -

i required find largest number in integer array recursively. function crashed cannot find bug. here's c++ code:

void numbers::compare(int size) { if(size == 0)     cout << "you must enter number!" << endl;  if(size ==1)     cout << "the max number " <<  numarray[0] << endl;  if(size >1) {     if(numarray[size-1] > numarray[size-2])     {         int temp = 0;         numarray[size-1] = temp;         temp = numarray[size-2];         numarray[size-2]= numarray[size-1];         size --;      }   size = size -1 ;   compare(size);  }   } 

here problem:

    int temp = 0;      numarray[size-1] = temp; // set numarray[size-1]=0     temp = numarray[size-2];     numarray[size-2]= numarray[size-1];// set numarray[size-2]= 0     size --; 

you set entire array 0.

what meant do:

    int temp = numarray[size-2];      numarray[size-2] = numarray[size-1];     numarray[size-1]= temp     size --; 

note change array in process, not sure if meant do.