From Clomosy Docs
function StrToInt(const S: string):Integer;
The StrToInt, it converts a string data (S) to an integer value.
Example
var
firstNumber,secondNumber,result : Integer;
{
firstNumber = StrToInt('100');
secondNumber = StrToInt('200');
result = firstNumber + secondNumber;
ShowMessage('Result : '+IntToStr(result));
}
Output:
Result : 300