C++ utf8编码怎么转换为ANSI编码?

有一个字符数组 ,"张三"是UTF8编码,如何把"张三"转成ANSI编码存进字符数组或字符串中?

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可参考:http://www.javashuo.com/article/p-vqhkklng-kt.htmlhttps://blog.csdn.net/hailong7308/article/details/121367247