Thread: Code Translation

Hi,
I desperately need advice on planning a program that performs Pascal-to-C++ code conversion. I'm including a sample Pascal program with its C++ equivalent. You don't need to know Pascal - if you can help me plan a program that'll be able to convert this sample code, I'll be more than satisfied.
Leaving out the reading-from-file and writing-to-new-file parts of it, (just knowing that it'll convert line by line) how should the program be structured? (How should the conversion be divided, what should each division do?)

I will be forever thankful to anyone who helps me with this program!

Linette


Pascal code:

Code:

program pas (input, output); 
uses    crt;
var
        avg: real;
        count, sum, grd, n : integer;

        procedure readint (lo,hi : integer; var x: integer);
	var       nothing : char;    {here for no reason}
        begin
             readln(x);
             while (x<lo) or (x>hi) do
             begin
               writeln (x, ' is not an acceptable grade.');
               write ('Enter a grade: ');
               readln (x);
             end;
        end;

begin
     clrscr;
     write ('How many grades? ');
     readln (n);
     writeln;
     sum := 0;
     for count := 1 to n do
     begin
          write ('Enter a grade: ');
          readint (0,100,grd);
          sum := sum + grd;
     end;
     avg := sum / n;
     writeln;
     writeln ('The total is ',sum);
     writeln ('The average is ',avg:5:2);  {don't worry about the formatting yet}
     readkey;
end.

C++ equivalent:

Code:

#include <iostream.h>
#include <conio.h>

void readint (double lo, double hi, double &x) {
	char nothing; /* here for no reason */
	cin >> x;
	while ( (x<lo) || (x>hi) ) {
		cout << x << " is not an acceptable grade." << endl;
		cout << "Enter a grade: ";
		cin >> x;
	}
	return;
}

void main () {
	double avg;
	int count;
	double sum;
	double grd;
	int n;
	clrscr ();
	cout << "How many grades? ";
	cin >> n;
	cout << "\n";
	sum = 0;
	for (count=1; count<=n; count++) {
		cout << "Enter a grade: ";
		readint (0,100,grd);
		sum = sum + grd;
	}
	avg = sum / n;
	cout << "\n";
	cout << "The total is " << sum << endl;
	cout << "The average is " << avg << endl;  /*don't worry about the formatting yet*/
	return;
}