Сортировка Пузырьком :) - C++

#include <iostream>
#include <fstream>
#include <windows.h>
 
using namespace std;
    
int main() {
int size_array = 0;
int i = 0;
ifstream input;
ofstream output;
FILE* file;
char data[30];
cout << "input file: ";
cin.getline(data, 30);
    
input.open(data);
    
char output1[30];
cout << "output file: ";
cin.getline(output1, 30);
    
output.open(output1);
 
file = fopen(data, "r"); // only read
 
if(file == NULL) {
cout << "File " << data << " not found!" << endl;
cin.get();
return 0;
}
    
while(!feof(file)) {
fscanf(file, "%f", &i);
size_array++;
}
    
int N = size_array;
float array[N];
ifstream f(data);
 
for(int i = 0; i < N; i++) {
f >> array[i];
}
 
for(int i = N-1; i >= 1; i--)
for(int j = 0; j < i; j++) {
if(array[j]> array[j+1]) {
float temp(0);
temp = array[j];
array[j] = array[j+1];
array[j+1] = temp;
}
}
    for(int i = 0; i < N; i++)
    output << array[i] << endl;
    char szPath[256];
 
    GetModuleFileName(NULL, szPath, sizeof(szPath));
 
    ShellExecute(0, "open", output1, NULL, NULL, SW_SHOW);
    
    return 0;
}