c++ 프로그래밍 오류(class)

#include "Copy.h"

using namespace std;

int main() {
Copy copy[100];

ifstream in("input.txt");
int school_num = 1;
int blank, length;
int s = 1, i=1;
char gradestr[100];
char numstr[100];
char classifystr[100];
char namestr[100];
char c_numstr[100];
char scorestr[100];
char* strptr1;
char* strptr2;
char* strptr3;
char* strptr4;
char* strptr5;
char* strptr6;
int len1, len2, len3, len4, len5, len6;
string _grade;
string _num;
string _classify;
string _name;
string _c_num;
string _score;

string line;

while (getline(in, line))
{
blank = line.find(",");
line.erase(blank, 1);
length = line.find(",");

while (length != -1)
{
if (s % 6 == 1)
{

_grade=line.substr(0, blank);
s++;
}

if (s % 6 == 2)
{
_classify = line.substr(blank, length - blank);
s++;
}
if (s % 6 == 3)
{
blank = length;
line.erase(blank, 1);
length = line.find(",");
_num = line.substr(blank, length - blank);
s++;

}
if (s % 6 == 4)
{
blank = length;
line.erase(blank, 1);
length = line.find(",");
_name = line.substr(blank, length - blank);
s++;

}
if (s % 6 == 5)
{
blank = length;
line.erase(blank, 1);
length = line.find(",");
_c_num = line.substr(blank, length - blank);
s++;

}
if (s % 6 == 0)
{
blank = length;
line.erase(blank, 1);
length = line.find(",");
_score = line.substr(blank, length - blank);

s++;
school_num++;

}
strcpy(gradestr , _grade.c_str());
strcpy(classifystr, _classify.c_str());
strcpy(numstr, _num.c_str());
strcpy(c_numstr, _c_num.c_str());
strcpy(scorestr, _score.c_str());
strcpy(namestr, _name.c_str());
len1 = strlen(gradestr) + 1;
len2 = strlen(classifystr) + 1;
len3 = strlen(numstr) + 1;
len4 = strlen(namestr) + 1;
len5 = strlen(c_numstr) + 1;
len6 = strlen(scorestr) + 1;
strptr1 = new char[len1];
strptr2 = new char[len2];
strptr3 = new char[len3];
strptr4 = new char[len4];
strptr5 = new char[len5];
strptr6 = new char[len6];
strncpy_s(strptr1, len1, gradestr,5);
strncpy_s(strptr2, len2,classifystr,8);
strncpy_s(strptr3, len3, numstr,8);
strncpy_s(strptr4, len4, namestr,26);
strncpy_s(strptr5, len5, c_numstr,3);
strncpy_s(strptr6, len6, scorestr,2);

copy[i].School_save(strptr1, strptr2, strptr3, strptr4, strptr5, strptr6);
copy[i].School_print();
i++;

blank = length;
line.erase(blank, 1);
length = line.find(",");
}
}

}
-----------------------------------------------------------------------------------------------------------
#include "Copy.h"

void Copy::School_save(char* grade_, char* classify_, char* num_, char* name_, char* c_num_, char* score_){
strncpy(grade, grade_,5);
strncpy(classify, classify_,8);
strncpy(num, num_,8);
strncpy(name, name_,26
strncpy(c_num, c_num_,3);
strncpy(score, score_,2);

}
void Copy::School_print(){
cout << grade << ","<< classify << "," << num << "," << name << "," << c_num<< "," < }
-----------------------------------------------------------------------------------------------------------
#pragma once
#define _CRT_SECURE_NO_WARNINGS
#include
#include
#include

using namespace std;

class Copy
{
char grade[5];
char num[8];
char classify[8];
char name[26];
char c_num[3];
char score[2];

public:
void School_save(char* grade_, char* classify_, char* num_, char* name_, char* c_num_, char* score_);
void School_print();
Copy() {

}
};

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input파일을 읽어서 class를 이용해 두가지의 멤버함수를 만들어 (저장,출력)하기를 하고있습니다.
하다보니 출력을 하면 grade와 classify에서 출력이 이상하게 됩니다.
도와주세요ㅠㅠㅠ