用户交互程序，格式化输出

name = input("name:")
age = int(input("age:"))#intege整数
salary = float(input("salary:"))#浮点型

name = input("name:")
age = int(input("age:"))#intege整数
salary = float(input("salary:"))#浮点型

msg = ‘‘‘
---------info of %s--------------
name:%s
age%d
salary:%f
‘‘‘%(name,name,age,salary)#里面的%s等对应个数需要与这里一致，按照顺序排列
print(msg)

name = input("name:")
age = int(input("age:"))#intege整数
salary = float(input("salary:"))#浮点型

msg = ‘‘‘
---------info of {_name}--------------
name:{_name}
age:{_age}
salary:{_salary}
‘‘‘.format(_name = name,
            _age = age,
            __salary = salary)
print(msg)

name = input("name:")
age = int(input("age:"))#intege整数
salary = float(input("salary:"))#浮点型
print(type(name))
print(type(age))
print(type(salary))
str(age)#转换为string字符类型
print(type(age))