Template and model programming (non-type template parameters), array Initialization

The template parameters do not have to be all types.

When a function is called, non-type parameters are replaced by values. The value type is specified in the template parameters table.

E.g .:

# Include <iostream> using namespace STD; typedef int t; Template <typename T> // <class T> inline t subtract (T T1, t T2) {return t1-t2 ;} template <class T> class mycls {public: T T1; t gett () {return T1 ;}; // (non-type template parameters) // initialize the array template <typename T, size_t n> void arr_init (T (& ARR) [N]) {for (INT I = 0; I <n; ++ I) {arr [I] = 0 ;}// calculation and template <typename T, size_t n> T arr_sum (T (& ARR) [N]) {t Sum = 0; for (INT I = 0; I <n; ++ I) {sum + = arr [I];} return sum;} int main () {int arr [10]; for (INT I = 0; I <10; ++ I) {cout <arr [I] <"," ;}cout <Endl; arr_init (ARR ); for (INT I = 0; I <10; ++ I) {cout <arr [I] <"," ;}cout <Endl; // After the value is assigned, for (INT I = 0; I <10; ++ I) {arr [I] = I + 1;} int result = arr_sum (ARR ); cout <result <Endl;/* int A = subtract (1, 2); cout <A <", double:" <subtract (1.1f, 2.2f) <Endl; mycls <int> mc1; mc1.t1 = 123; cout <mc1.gett () <Endl; mycls <double> MC2; mc2.t1 = 123.12345; cout <mc2.gett () <Endl; */return 0 ;}