function, function call, for loop

Hi

Personally I would prefer to give function's definition before making calls to it because it provides more understanding how C++ works. As some member here told me that time-travel (moving back and forth) is not possible all the time in C++. The statements are executed in a sequence so we should also try to write the code in a sequence to make it more understandable.

for(int j=0; j<45; j++) - The for loop is executed, then it's value is incremented, then the incremented value is checked against the test expression. So, don't you think having the syntax this way, for(int j=0; j++; j<45), makes more sense?

Please help me. Thanks a lot.

Code:

// table.cpp
// demonstrates simple function
#include <iostream>
using namespace std;

void starline();                          //function declaration
                                          //   (prototype)
int main()
   {
   starline();                            //call to function
   cout << "Data type   Range" << endl;
   starline();                            //call to function
   cout << "char        -128 to 127" << endl
        << "short       -32,768 to 32,767" << endl
        << "int         System dependent" << endl
        << "long        -2,147,483,648 to 2,147,483,647" << endl;
   starline();                            //call to function
   return 0;
   }
//--------------------------------------------------------------
// starline()
// function definition
void starline()                           //function declarator
   {
   for(int j=0; j<45; j++)                //function body
      cout << '*';
   cout << endl;
   }

Well, you got the order wrong.

1) The initialing is executed.
2) The condition is checked.
3) [Loop Happens]
4) The incrementing expression is executed.

Repeat 2,4.

Soma

I guess this becomes a non-issue if you are going to have more than one source file (declarations in headers, definitions in implementation files).

But anyway, you don't normally care exactly how a function works, just as long as you know what it does. For example, have you read all the code for the overloads of cout<< before using it?