Opening a file with a name in a variable

Hi

This is a constructor that receives a file name

Code:

---

Bank::Bank(char s[])
{
 

 fp = fopen("s", "r");

 if (fp)
  printf("FILE OPENED \n");

 else
  printf("NO FILE WAS FOUND!!!");
}

---

But it does not work, if I put the file name in fopen it works, but if the same name is in the variable it will not open. Why doesn't this work?

You are passing the string literal "s" not the variable named s to fopen().

By the way, are you deliberately using the file handling library inherited from C, or are you just not aware of the C++ <fstream> standard header and its contents?

Likewise, are you deliberately using a null terminated string as inherited from C, or are you just not aware of std::string?

Code:

---

fp = fopen("s", "r");

---

Pass string "s" to fopen.

Code:

---

fp = fopen(s, "r");

---

Pass contents of variable s to fopen.

You need to be aware of the difference of passing a variable and a value to functions.