聲明一個類的模板的時候，在定義之前增加一行
template

**#include <iostream>using namespace std; template <typename numtype> //定義一個類的模板 class Compare{ public:Compare(numtype a,numtype b){x=a;y=b;}numtype max(){return(x>y)?x:y;}numtype min(){return(x<y)?x:y;} private:numtype x,y; }; int main() {Compare <int> cmpl(3,7);cout<<cmpl.max()<<"is the Maximum of two integer numbers."<<endl;cout<<cmpl.min()<<"is the Minimum of two integer numbers."<<endl;Compare <float> cmp2(3.2323,7.658);cout<<cmpl.max()<<"is the Maximum of two integer numbers."<<endl;cout<<cmpl.min()<<"is the Minimum of two integer numbers."<<endl;Compare <char> cmp3('A','G');cout<<cmpl.max()<<"is the Maximum of two integer numbers."<<endl;cout<<cmpl.min()<<"is the Minimum of two integer numbers."<<endl;return 0; }** **/home/andrew/文檔/Clion/untitled5/cmake-build-debug/untitled5 7is the Maximum of two integer numbers. 3is the Minimum of two integer numbers. 7is the Maximum of two integer numbers. 3is the Minimum of two integer numbers. 7is the Maximum of two integer numbers. 3is the Minimum of two integer numbers.Process finished with exit code 0**

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