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关于vs2015下c++ C2572错误说明

错误提示

错误 C2572 “Cstu::Cstu”: 重定义默认参数 : 参数 1 test01 d:\c_projects\test01\test01\cstu.cpp 7

//函数原型

Cstu::Cstu(float englishScore, float dataScore, char *resume,

char *birthday = "19950125", char *name = "donghang", char *sex = "male")

//函数定义

Cstu::Cstu(float englishScore, float dataScore, char *resume,

char *birthday = "19950125", char *name = "donghang", char *sex = "male")

{

printf("Cstu constructor(2) is running\n");

strcpy(Name, name);

strcpy(Sex, sex);

strcpy(Birthday, birthday);

EnglishScore = englishScore;

DataScore = dataScore;

if (resume == NULL)

Resume = NULL;

else

{

Resume = new char[strlen(resume) + 1];

strcpy(Resume, resume);

}

}

出现此错误的原因是函数定义和函数声明都是用了默认参数，删除函数声明或函数定义任意一个默认参数即可

默认参数只能出现一次