Question

我收到这些错误。在第一行和第二行，它表示没有匹配函数来调用＆＃39; strcpy＆＃39;，我很确定我使用错误的预处理器指令，我使用#include＆lt; fstream的＆GT;

void writeStudents(vector<student> &studentVector){
ifstream studentinfo;
studenttowrite allinfo;
studentinfo.open("students.bin");
for (unsigned int x=0 ; x<studentVector.size(); x++) {
    allinfo.StuNo = studentVector[x].StuNo;
    strcpy(allinfo.FirstName, studentVector[x].FirstName);
    strcpy(allinfo.LastName, studentVector[x].LastName);
    allinfo.major = studentVector[x].major;
    allinfo.college = studentVector[x].college;
    allinfo.Age     = studentVector[x].Age;
    allinfo.Gpa     = studentVector[x].Gpa;
    studentinfo.write(reinterpret_cast<char *>
                    (&studentVector[x]), sizeof(student));
}

Answer 1

要使用包含std::strcpy()的{{1}}（相当于C strcpy()）功能是不够的，您必须包含fstream：

cstring

另外（不知道#include <cstring>和student，allinfo.FirstName的哪些类型）allinfo.LastName的参数必须可转换为std::strcpy()和char*

我为strcpy收到此错误

1 个答案: