為什么下面的沒法運行啊，怎么改。（ //表示系統報的錯誤）#include<iostream>using namespace std;template<typename T>; //syntax error : '<end Parse>'T max(T a,T b,T c){ //missing ';' before '{'if(b>a) a=b;if(c>a) a=c;return a;}int main(){int i1=8,i2=5,i3=6,i;double d1=56.9,d2=90.765,d3=43.1,d;long g1=67843,g2=-456,g3=78123,g;i=max(i1,i2,i3); //'i' : undeclared identifier // 'max' : undeclared identifier d=max(d1,d2,d3); //'d' : undeclared identifier // 'max' : undeclared identifierg=max(g1,g2,g3); //'g' : undeclared identifier // 'max' : undeclared identifiercout<<"i_max="<<i<<endl;cout<<"d_max="<<d<<endl;cout<<"g_max="<<g<<endl;return 0;}