Calculator

#include "stdafx.h"
#include <stdio.h>
#include <iostream>
#include <fstream>
#include "string.h"
#include <stdlib.h>
#include <ctime>
#include "windows.h"
using namespace std;
int main1()
{
char rezelt[256];
FILE *tempf2;
       if ((tempf2 = fopen("Rezultat.txt", "r")) == NULL)
           printf("Лог фаил не найден");
       else {
           fscanf(tempf2,"%s", rezelt);
           while (!feof(tempf2)) {
                   printf("%s\n", rezelt);
           fscanf(tempf2,"%s", rezelt);
       }
       fclose(tempf2);
}
return 0;
}
 
int _tmain(int argc, _TCHAR* argv[])
{
SetConsoleCP(1251);
SetConsoleOutputCP(1251);
char temp3[256],znak;
char *temp4 = "log";
double temp, temp2, rez; 
int fznak;
ofstream fout;
fout.open("Rezultat.txt", ios_base::app);
while(1+1)
{
time_t now = time(0);
tm* localtm = localtime(&now);
cin >> temp3 >> znak >> temp2;
(temp3, sizeof(temp3));
temp=atof(temp3);
fznak=znak;
if (fznak==43)
{
   
    rez=temp + temp2;
    cout << rez << endl;
    fout << asctime(localtm) << temp << "+" << temp2 << "=" << rez << "\n" << endl;
}
if (fznak==45)
{
    rez=temp - temp2;
    cout << rez << endl;
    fout << asctime(localtm) << temp << "-" << temp2 << "=" << rez << "\n" << endl;
}   
if (fznak==42)
 
{
    rez=temp * temp2;
    cout << rez << endl;
    fout << asctime(localtm) << temp << "x" << temp2 << "=" << rez << "\n" << endl;
}
if (fznak==47)
{
    rez=temp / temp2;
    cout << rez << endl;
    fout << asctime(localtm) << temp << "/" << temp2 << "=" << rez << "\n" << endl;
}
if (int temp5 = strcmp(temp3, temp4) == NULL)
main1();
}
}