Question

I made a program to get data from a file, it works, but then the program says it stopped working.
Here is my code:

#include <stdio.h>
#include <windows.h>
#include <iostream>
using namespace std;
string show()
{
    FILE *in;
    char c;
    in = fopen("version.txt", "r");
    if(in != NULL)
    {
        while((c = fgetc(in)) != EOF) 
        {
            putchar(c); 
        }
        fclose(in);
    }
    else printf("Unable to open file\n");
}


int main()
{
    show();
}

Answer 1

Your function is declared to return a string but there is no return statement.
This is “undefined behavior” in C++ (only in main you are allowed to omit the return statement and in that case C++ will assume a return 0; automatically – but IMO it’s nicer to also always write it).