exercise 3.3

gistfile1.txt

inp = raw_input("Enter the score")
score = float(inp);
if score <= 1.0 :
    if score >= 0.9 :
        print("A")
    elif score >= 0.8 :
        print("B")
    elif score >= 0.7 :
        print("C")
    elif score >= 0.6 :
        print("D")
    else :
        print("F")
else :
    print("plese enter the score under 1.0")