totalTemp = 0		#initialise total of Temperatures
numberOfTemps = 0	#initialise number of temperatures
print ("Enter next temperature ")
temp = int(input())	#input first temperature
while temp !=-100:
    totalTemp = totalTemp + temp
    numberOfTemps = numberOfTemps + 1
    print("Enter next temperature")
    temp = int(input())
	
if numberOfTemps == 0:
    print("No valid temperatures entered - program terminated")
else:
    averageTemp = totalTemp/numberOfTemps
    print ("average temp = ", averageTemp)