Error opening output file 32

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#include <iostream>
#include <conio.h>
#include <string.h>
#include <iomanip>
 
using namespace std;
FILE *fl;
 
typedef struct {
    char fio[40];
    int num;
    char doljn[5];
    int god; 
} Info;
 
Info ms[100];
int n = 0, i, j;
char fname[20];
int menu();
void nnf();
void newf();
void spisok();
void opf();
void resc();
void resf();
 
int main() {
    while (true) {
        switch (menu()) {
        case 1: nnf(); break;
        case 2: newf(); break;
        case 3: spisok(); break;
        case 4: opf(); break;       ///redact
        case 5: resc(); break;
        case 6: resf(); break;
        case 7: return 0;
        default: "Viberite pravilno!";
        } puts("Press any key to continue");
        getch(); system("cls");
    }
}
 
int menu() {
    cout << "VIBERITE:" << endl;
    cout << "1. Vvod file name" << endl;
    cout << "2. New file" << endl;
    cout << "3. Vvesti spisok" << endl;
    cout << "4. Open file" << endl;
    cout << "5. Vivesti result" << endl;
    cout << "6. Vivesti v fail" << endl;
    cout << "7. Exit" << endl;
    int i;
    cin >> i;
    return i;
}
 
void nnf() {
    cout << "Vvedite file name" << endl;
    cin >> fname;
}
 
void newf() {
    if ((fl = fopen(fname, "wb")) == NULL) {
        cout << "Oshibka pri sozdanii" << endl;
        exit(1);
    } cout << "OK" << endl;
    fclose(fl);
}
 
void spisok() {
    if ((fl = fopen(fname, "rb+")) == NULL) {
        cout << "Oshibka pri sozdanii" << endl;
        exit(1);
    } cout << "Vvedite chislo sotrudnikov: ";
    cin >> n;
    for (int i = 0; i<n; i++) {
        cout << "Vvedite fio sotrudnika: ";
        cin >> ms[i].fio;
        cout << "Vvedite nomer otdela: ";
        cin >> ms[i].num;
        cout << "Vvedite doljnost': ";
        cin >> ms[i].doljn;
        cout << "Vvedite god nachala raboty: ";
        cin >> ms[i].god;
        fwrite(&ms[i], sizeof(Info), 1, fl);
        cout << endl;
    } fclose(fl);
}
 
void opf() {
    if ((fl = fopen(fname, "rb")) == NULL) {
        cout << "Oshibka pri otkritii" << endl;
        exit(1);
    } n = 0;
    Info t;
    cout << "Spisok:" << endl;
    while (true) {
        int nwrt = fread(&t, sizeof(Info), 1, fl);
        if (nwrt != 1) break;
        ms[n] = t;
        cout << ms[n].fio << ", " << ms[n].num << ", " << ms[n].doljn << ", " << ms[n].god << endl;
        n++;
    } fclose(fl);
}
 
void resc() {
    int d;
    cout << "Vvedite tekushii god: ";
    cin >> d;
    cout << endl << "Sotrudniki, proraboravshie 20 let:" << endl;
    cout << endl;
    for (int i = 0; i<n; i++)
        if ((d - ms[i].god) >= 20)
            cout << ms[i].fio << ", " << ms[i].num << ", " << ms[i].doljn << ", " << ms[i].god << endl;
}
 
void resf() {
    char codet[30], cd[30], s[30];
    FILE *ft;
    cout << "Vvedite imya faila: " << endl;
    cin >> codet;
    if ((ft = fopen(codet, "w")) == NULL) {
        cout << "Oshibka pri sozdanii!" << endl;
        exit(1);
    } int d;
    cout << "Vvedite tekushuyu datu: ";
    cin >> d;
    for (int i = 0; i < n; i++)
        if ((d - ms[i].god) >= 20) {
            strcpy(s, ms[i].fio);
            strcat(s, "n");
            fputs(s, ft);
            itoa(ms[i].god, cd, 10);
            strcpy(s, cd);
            strcat(s, "n");
            fputs(s, ft);
        } fclose(ft);
}