I just learned about if, then elif statements and wrote this program.
The problem is, it's displaying all of the possibilities even after you
enter a 0, or if the fat grams are more then the total number of
calories , that is supposed to stop the program instead of continuing on
with the print statements that don't apply. Any idea's? thanks
#Prompt for calories
cal = input("Please enter the number of calories in your food: ")
#Prompt for fat
fat = input("Please enter the number of fat grams in your food: ")
#Input validation
if cal or fat <= 0:
#Display message
print "Error. The number of calories and/or fat grams must be
positive"
print
else:
#Calculate calories from fat
calfat = float(fat) * 9
#Calculate number of calories from fat
caldel = calfat / cal
#change calcent decimal to percentage
calcent = caldel * 100
if calfat > cal:
print "The calories or fat grams were incorrectly entered."
else:
#evaluate input
if caldel <= .3:
print "Your food is low in fat."
elif caldel >= .3:
print "Your food is high in fat."
#Display percentage of calories from fat
print "The percentage of calories from fat in your food is %",
calcent
Here's an example of the output...
Please enter the number of calories in your food: 50
Please enter the number of fat grams in your food: 30
Error. The number of calories and/or fat grams must be positive
Your food is low in fat.
The percentage of calories from fat in your food is % 0.0
It was supposed to print The calories or fat grams were incorrectly
entered since the calories from fat was greater then the total number of
calories.
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