Mega Code Archive
Demonstrate non-type template arguments
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#include <iostream>
#include <cstdlib>
using namespace std;
//int size is a non-type agument
template <class T, int size> 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, 10> intob;
MyType<double, 15> doubleob;
cout << "Integer array: ";
for(int i=0; i<10; i++)
intob[i] = i;
for(int i=0; i<10; i++)
cout << intob[i] << " ";
cout << '\n';
cout << "Double array: ";
for(int i=0; i<15; i++)
doubleob[i] = (double) i/3;
for(int i=0; i<15; i++)
cout << doubleob[i] << " ";
cout << '\n';
intob[12] = 100; // generates runtime error
return 0;
}
Integer array: 0 1 2 3 4 5 6 7 8 9
Double array: 0 0.333333 0.666667 1 1.33333 1.66667 2 2.33333 2.66667 3 3.33333 3.66667 4 4.33333 4.66667
Index value of 12 is out-of-bounds.
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