enum day {SUN, MON, TUES, WED, THURS, FRI, SAT};

// MinTemps is a 2-dimensional array of daily minimum 
// temperatures for 52 weeks, where each column of the
// array contains temperatures for one week.

// initially, assume the lowest temperature is 
// first in the array
double LowestTemp = MinTemps[0][0];
day DayOfWeek = SUN;
int WeekOfYear = 1;

// search array for lowest temperature
for (int WeekIndex = 0; WeekIndex < WEEKS_PER_YEAR; 
                                           ++WeekIndex)
   for (day DayIndex = SUN; DayIndex <= SAT; 
                            DayIndex = day(DayIndex+1))
      if (LowestTemp > MinTemps[DayIndex][WeekIndex])
      {  LowestTemp = MinTemps[DayIndex][WeekIndex];
         DayOfWeek = DayIndex;
         WeekOfYear = WeekIndex+1;
      }  // end if, for
// Assertion: LowestTemp is the smallest value in
// MinTemps and occurs on the day and week given by
// DayOfWeek and WeekOfYear, that is, LowestTemp ==
// MinTemps[DayOfWeek][WeekOfYear-1].