// find min and max of array of integers
//
#include <stdio.h>

void aprint( const char msg[], const int a[], int n)
{
  printf( "%s =", msg);
  for( int i = 0; i < n; ++i) printf( " %i", a[i] );
  printf("\n");
}

int minmax( const int x[], int n, int *pmax)
{
  int min = x[0];  *pmax = x[0];

  for( int i = 1; i < n; ++i)
  {
    if( x[i] < min) min = x[i]; else if( x[i] > *pmax) *pmax = x[i];
  }

  return min;
}

int main( void)
{
  int z[5] = { -5, 8, 0, -10, 2 };

  aprint( "z", z, 5);

  int min, max;  min = minmax( z, 5, &max);

  printf( "min = %i, max = %i\n", min, max);
}

/* output:

z = -5 8 0 -10 2
min = -10, max = 8

*/