Softwareentwicklung in C++ - ASC

5
6 using std : : cout ;
7 using std : : endl ;
8
9 // function d e c l a r a t i o n s
10 int32 square ( int32 num) ;
11 double square (double num) ;
12 void show ( int32 num) ;
13 void show (double num) ;
14
5. Funktionen 87
15 //−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−
16 int main ( int argc , char ∗ argv [ ] )
17 {
18 int32 a number = 4;
19 double one more number = 4 . 0 ;
20
21 int32 a square = square ( a number ) ;
22 double one more square = square ( one more number ) ;
23
24 show ( a square ) ;
25 show ( one more square ) ;
26
27 // i m p l i c i t conversions can a l s o take place :
28 int16 and one more = 3;
29 show ( square ( and one more ) ) ;
30 }
31
32 //−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−
33 int32 square ( int32 num)
34 {
35 return (num ∗ num) ;
36 }
37
38 //−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−
39 double square (double num)
40 {
41 return (num ∗ num) ;
42 }
43
44 //−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−
45 void show ( int32 num)
46 {
47 cout