Error: some class is not a template - c++

Question

I have a header file Algo.h. It has the following content:
#include <iostream>
#include <fstream>
#include <math.h>
#include <float.h>
#include <string.h>
#include <stdlib.h>
using namespace std;
//some static functions
// ...
template <class Type> class Algo{
int
public:
Algo(int size, int num, int plth, int theN, float** theAg, int theLN,
float* theIn, float theeEps = 1E-3, float theEpsilonLR = 1E-3,
int theCycle = 30, bool DebInf = false, int theT = -1, int** theX = 0,
const char* theFileName = 0, const char* theFileNameChar = 0);
~Algo();
//some methods
//...
};
//Constructor
template <class Type> Algo<Type>::Algo(int size, int num, int plth, int theN, float** theAg, int theLN,
float* theIn, float theeEps = 1E-3, float theEpsilonLR = 1E-3,
int theCycle = 30, bool DebInf = false, int theT = -1, int** theX = 0,
const char* theFileName = 0, const char* theFileNameChar = 0){
//...
}
// ...
Then I'd like to usel it in main.cpp:
#include "Algo.h"
#include <float.h>
#include <time.h>
#include <stdlib.h>
#include <string>
#include <iostream>
using namespace std;
Algo<int>* construct1(const int & rt, float** & rm); //error: Algo is not a template
Algo<int>* construct2(const int & rte, float** & rm, Algo<int>* & the1, const bool & rob1); //error: Algo is not a template
//...
int main(){
//...
return 0;
}
It seems that everything should work fine, but I always get this error:
Algo is not a template.
Do you have any ideas how to fix it?

Answer 1

there is "int" which should not be there in your code. delete it, please.
template <class Type> class Algo{
int // here should be deleted
public:
...
constructor of Algo has many default params, but when you define this function, these default params should not be set value in param-list. you can make the constructor definition as follows:
template <class Type> Algo<Type>::Algo(int size, int num, int plth, int theN, float** theAg, int theLN, float* theIn, float theeEps, float theEpsilonLR, int theCycle, bool DebInf, int theT, int** theX, const char* theFileName, const char* theFileNameChar)
{
//...
}
do these 2 fixs, it will works.( I have try it on my computer~ )

Answer 2

I don't think this is the only problem, but pay attention to how you attempt to use it.
The constructor:
Algo(int size, int num, int plth, int theN, float** theAg, int theLN,
float* theIn, float theeEps = 1E-3, float theEpsilonLR = 1E-3,
int theCycle = 30, bool DebInf = false, int theT = -1, int** theX = 0,
const char* theFileName = 0, const char* theFileNameChar = 0);
Has many parameters. The first 7 are required, the remainder have default values and are optional. However, when you try and instantiate an instance:
Algo<int>* construct1(const int & rt, float** & rm); //error: Algo is not a template
Algo<int>* construct2(const int & rte, float** & rm, Algo<int>* & the1, const bool & rob1); //error: Algo is not a template
You are passing either 2, or 4 parameters. There is no matching overload.
You need to provide at least the first 7 parameters.