[問題] varadic function編譯失敗
想寫一個最簡單的varadic function p(需不定數目的整數為參數），
把輸入的參數寫到standard out，
但是連編譯都有問題，找不到頭緒，
google找到的都是varadic template，但我不想用template，
可以請大家幫忙看一下哪裡錯了嗎？
（如果有違反板規麻煩告知，謝謝。）
//程式碼
#include <iostream>
void _real(int i) {
std::cout << i << ",";
}
void p(int head, int... tail) {
_real(head);
p(tail...);
}
void p() {};
int main() {
p(3,5,1,3,7,2);
}
//錯誤訊息
$ g++ -std=c++11 print.cpp
print.cpp:6:25: error: expansion pattern ‘int’ contains no argument packs
void p(int head, int... tail) {
^
print.cpp: In function ‘void p(int)’:
print.cpp:8:7: error: ‘tail’ was not declared in this scope
p(tail...);
^
print.cpp: In function ‘int main()’:
print.cpp:14:18: error: no matching function for call to ‘p(int, int, int, int, int, int)’
p(3,5,1,3,7,2);
^
print.cpp:14:18: note: candidates are:
print.cpp:6:6: note: void p(int)
void p(int head, int... tail) {
^
print.cpp:6:6: note: candidate expects 1 argument, 6 provided
print.cpp:11:6: note: void p()
void p() {};
^
print.cpp:11:6: note: candidate expects 0 arguments, 6 provided
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