Swift program to demonstrate the Int() function with Invalid value

Program/Source Code:

The source code to demonstrate Int() function with an invalid value is given below. The given program is compiled and executed successfully.

// Swift program to demonstrate the
// Int() function with Invalid value

import Swift;

var strCode:String = "ABCDEF";
if let num = Int(strCode)
{
    print("Number is: ",num);
}
else
{
    print("String does not contain valid number.");
}

Output:

String does not contain valid number.

...Program finished with exit code 0
Press ENTER to exit console.

Explanation:

In the above program, we imported a package Swift to use the print() function using the below statement,

import Swift;

Here, we created a string strCode with the initial value "ABCDEF”. And, strCode does not contain a valid numeric value. Then Int() function return "nil" value. After that, we printed the appropriate message on the console screen.