""" |
判断输入的边长能否构成三角形,如果能则计算出三角形的周长和面积 |
""" |
a = float ( input ( 'a = ' )) |
b = float ( input ( 'b = ' )) |
c = float ( input ( 'c = ' )) |
if a + b > c and a + c > b and b + c > a: |
print ( '周长: %f' % (a + b + c)) |
p = (a + b + c) / 2 |
area = (p * (p - a) * (p - b) * (p - c)) * * 0.5 |
print ( '面积: %f' % (area)) |
else : |
print ( '不能构成三角形' ) |