c++如何实现文本文件的读写

Dim data1 as String,data2 as String Open "a.txt" for input as #1'a.txt绝对路径填在双引号间 Input #1,data1 Close Open "b.txt" for input as #2'b.txt绝对路径填在双引号间 Input #2,data2 Close Open "c.txt" for input as #3'c.txt绝对