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# include //
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:
void f1(); // f1
int f2 (int, char); // f2
double sin (double); // ࠠ
/ # include < stdio. h > [1].
Hello, world! :
< stdio. h >
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/*proba_1_1.cpp*/
# include <stdio.h>
#include <conio.h> // _getch()
Int main()
{
printf("Hello, World! \n " [2]);
_ getch () [3];
return 0 [4];
}
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Hello, world! ++ iostream :
/*proba_2_1.cpp*/
# include <iostream> [5]
# include <cstdlib> // system()
Int main()
{
std:: cout << "Hello, world!" << std:: endl [6];
system ("pause"); //
return 0;
}
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std:: using namespace std;. ( .h).
/*proba_2_2.cpp*/
# include <iostream>// ++
# include < cstdlib > // system()
Using namespace std;
Int main()
{
cout << "Hello, world!" << endl;
system ("pause");
return 0;
}
