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/*
 * @Author: lxt
 * @Date: 2022-09-14 14:17:05
 * @LastEditors: [lxt]
 * @LastEditTime: 2022-09-14 14:17:51
 * @Description: // # 
 */
pub fn add_two(a:i32)->i32{
    internal_adder(a,2)
}
fn internal_adder(a:i32,b:i32)->i32{
    a+b
}