#function template

Templates:

A template is a blueprint or formula for creating a generic class or a function. The library containers like iterators and algorithms are examples of generic programming and have been developed using template concept. Templates are the foundation of generic programming, which involves writing code in a way that is independent of any particular type. There is a single definition of each…

function template specialization failed?

#include template void foo(T) { std::cout << "foo(T)" << std::endl; } template void foo(T*) { //#3 std::cout << "foo(T*)" << std::endl; } #define TEST #ifdef TEST template void foo(int*) { //#1 std::cout << "foo(int*)" << std::endl; } #else template void foo(int*) { //#2 std::cout << "foo(int*)" << std::endl; } #endif int main(int argc, char **argv) { int* p = 0; foo(p); return 0; }