Mega Code Archive
Default template arguments
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#include <iostream>
#include <cstdlib>
using namespace std;
// T defaults to int and size defaults to 10
template <class T=int, int size=10> class MyType {
T a[size];
public:
MyType() {
for(int i=0; i<size; i++)
a[i] = i;
}
T &operator[](int i){
if(i<0 || i> size-1) {
cout << "\nIndex value of ";
cout << i << " is out-of-bounds.\n";
exit(1);
}
return a[i];
}
};
int main()
{
MyType<int, 100> intarray;
MyType<double> doublearray;
MyType<> defarray;
cout << "int array: ";
for(int i=0; i<100; i++)
intarray[i] = i;
for(int i=0; i<100; i++)
cout << intarray[i] << " ";
cout << '\n';
cout << "double array: ";
for(int i=0; i<10; i++)
doublearray[i] = (double) i/3;
for(int i=0; i<10; i++)
cout << doublearray[i] << " ";
cout << '\n';
cout << "defarray array: ";
for(int i=0; i<10; i++)
defarray[i] = i;
for(int i=0; i<10; i++)
cout << defarray[i] << " ";
cout << '\n';
return 0;
}
int array: 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34
35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69
70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99
double array: 0 0.333333 0.666667 1 1.33333 1.66667 2 2.33333 2.66667 3
defarray array: 0 1 2 3 4 5 6 7 8 9
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