#!/python3
#coding=utf-8

printf("Life is short,I use python !")

a = 10
b = 20

c = a + b
printf("The value of c is",c)

def mul(a,b):
    return (a*b)
d = mul(a,b)
printf("The value of d is",d)

def sum(a,b):
    return (a+b)

c = sum(a,b)
printf("The value of c is ",c)
