_C Programming Column_
by Al Stevens

Listing One
#include <iostream.h>
#include <string.h>
#include <stdlib.h>

int main()
{
    char msg[25];
    strcpy(msg, "The random number is: ");
    cout << msg << rand() << endl;
    return 0;
}


Listing Two
#ifndef _IOSTREAM
#define _IOSTREAM
namespace std  {
    #include <iostream.h>
}
#endif


Listing Three
#ifndef _CSTDLIB
#define _CSTDLIB
namespace std  {
    #include <stdlib.h>
}
#endif


Listing Four
#include <iostream>
#include <cstring>
#include <cstdlib>

int main()
{
    char msg[25];
    std::strcpy(msg, "The random number is: ");
    std::cout << msg << std::rand() << std::endl;
    return 0;
}


Listing Five
// ------- main.cpp
#include <fstream>
using namespace std;

void foo(ofstream& ofile);

int main()
{
    ofstream ofile("test.txt");
    foo(ofile);
    return 0;
}
// ------- foo.cpp
#include <fstream.h>

void foo(ofstream& ofile)
{
    ofile << "Hello Dolly";
}


Listing Six
#include <fstream>
using namespace std;

void foo(ofstream& ofile)
{
    ofile << "Hello Dolly";
}


Listing Seven
#include <iostream>
#include <cstring>
#include <cstdlib>
using namespace std;

int main()
{
    char msg[25];
    strcpy(msg, "The random number is: ");
    cout << msg << rand() << endl;
    return 0;
}


Listing Eight
#ifndef _IOSTREAM
#define _IOSTREAM
    #include <iostream.h>
    #ifndef using
        #define using     /* */
        #define namespace /* */
        #define std       /* */
    #endif
#endif