У тех кто на win10 и также у других запускается этот код?

$ g++ main.cpp -Wall -Wextra -Wpedantic
In file included from main.cpp:4:
algorithm.h: In member function ‘void algorithm<Type>::bigelem()’:
algorithm.h:13:20: error: there are no arguments to ‘size’ that depend on a template parameter, so a declaration of ‘size’ must be available [-fpermissive]
     for(k = 0; k < size(); k++) {
                    ^~~~
algorithm.h:13:20: note: (if you use ‘-fpermissive’, G++ will accept your code, but allowing the use of an undeclared name is deprecated)
algorithm.h:14:16: error: ‘matA’ was not declared in this scope
       maxval = matA.at(k).at(k); // проход по диагонали
                ^~~~
algorithm.h:14:16: note: suggested alternative: ‘data’
       maxval = matA.at(k).at(k); // проход по диагонали
                ^~~~
                data
algorithm.h:16:26: error: there are no arguments to ‘size’ that depend on a template parameter, so a declaration of ‘size’ must be available [-fpermissive]
       for(j = k + 1; j < size(); j++) { // больший элемент в столбце
                          ^~~~
algorithm.h:23:24: error: there are no arguments to ‘size’ that depend on a template parameter, so a declaration of ‘size’ must be available [-fpermissive]
         for(i = 0; i < size(); i++) { // перестановка строк матрицы A
                        ^~~~
algorithm.h:28:18: error: ‘vecB’ was not declared in this scope
         maxval = vecB.at(k); // перестановка элементов вектора B
                  ^~~~
algorithm.h: In member function ‘void algorithm<Type>::gauss()’:
algorithm.h:38:20: error: there are no arguments to ‘size’ that depend on a template parameter, so a declaration of ‘size’ must be available [-fpermissive]
     for(k = 1; k < size(); k++) { // прямой ход
                    ^~~~
algorithm.h:39:22: error: there are no arguments to ‘size’ that depend on a template parameter, so a declaration of ‘size’ must be available [-fpermissive]
       for(i = k; i < size(); i++) {
                      ^~~~
algorithm.h:40:16: error: ‘matA’ was not declared in this scope
         temp = matA.at(i).at(k - 1) / matA.at(k - 1).at(k - 1);
                ^~~~
algorithm.h:40:16: note: suggested alternative: ‘data’
         temp = matA.at(i).at(k - 1) / matA.at(k - 1).at(k - 1);
                ^~~~
                data
algorithm.h:41:24: error: there are no arguments to ‘size’ that depend on a template parameter, so a declaration of ‘size’ must be available [-fpermissive]
         for(j = 0; j < size(); j++) {
                        ^~~~
algorithm.h:45:9: error: ‘vecB’ was not declared in this scope
         vecB.at(i) = vecB.at(i) - temp * vecB.at(k - 1);
         ^~~~
algorithm.h:48:13: error: there are no arguments to ‘size’ that depend on a template parameter, so a declaration of ‘size’ must be available [-fpermissive]
     for(k = size() - 1; k >= 0; k--) { // обратный ход
             ^~~~
algorithm.h:49:14: error: ‘vecB’ was not declared in this scope
       temp = vecB.at(k);
              ^~~~
algorithm.h:50:15: error: there are no arguments to ‘size’ that depend on a template parameter, so a declaration of ‘size’ must be available [-fpermissive]
       for(j = size() - 1; j > k; j--) {
               ^~~~
algorithm.h:51:17: error: ‘matA’ was not declared in this scope
         temp -= matA.at(k).at(j) * vecX.at(j);
                 ^~~~
algorithm.h:51:17: note: suggested alternative: ‘data’
         temp -= matA.at(k).at(j) * vecX.at(j);
                 ^~~~
                 data
algorithm.h:51:36: error: ‘vecX’ was not declared in this scope
         temp -= matA.at(k).at(j) * vecX.at(j);
                                    ^~~~
algorithm.h:53:7: error: ‘vecX’ was not declared in this scope
       vecX.at(k) = temp / matA.at(k).at(k);
       ^~~~
algorithm.h:53:27: error: ‘matA’ was not declared in this scope
       vecX.at(k) = temp / matA.at(k).at(k);
                           ^~~~
algorithm.h:53:27: note: suggested alternative: ‘data’
       vecX.at(k) = temp / matA.at(k).at(k);
                           ^~~~
                           data
algorithm.h: In member function ‘void algorithm<Type>::prnls()’:
algorithm.h:58:20: error: there are no arguments to ‘size’ that depend on a template parameter, so a declaration of ‘size’ must be available [-fpermissive]
     for(j = 0; j < size(); j++) {
                    ^~~~
algorithm.h:59:22: error: there are no arguments to ‘size’ that depend on a template parameter, so a declaration of ‘size’ must be available [-fpermissive]
       for(i = 0; i < size(); i++) {
                      ^~~~
algorithm.h:60:12: error: ‘matA’ was not declared in this scope
         if(matA.at(j).at(i) < 0)
            ^~~~
algorithm.h:60:12: note: suggested alternative: ‘data’
         if(matA.at(j).at(i) < 0)
            ^~~~
            data
algorithm.h:65:18: error: ‘vecB’ was not declared in this scope
       cout<<"="<<vecB.at(j)<<endl;
                  ^~~~
main.cpp: In function ‘int main(int, char**)’:
main.cpp:6:14: warning: unused parameter ‘argc’ [-Wunused-parameter]
 int main(int argc, char* argv[]) {
          ~~~~^~~~
main.cpp:6:26: warning: unused parameter ‘argv’ [-Wunused-parameter]
 int main(int argc, char* argv[]) {
                    ~~~~~~^~~~~~
In file included from main.cpp:4:
algorithm.h: In instantiation of ‘void algorithm<Type>::prnls() [with Type = float]’:
main.cpp:26:13:   required from here
algorithm.h:58:18: warning: comparison of integer expressions of different signedness: ‘int’ and ‘uint’ {aka ‘unsigned int’} [-Wsign-compare]
     for(j = 0; j < size(); j++) {
                ~~^~~~~~~~
algorithm.h:59:20: warning: comparison of integer expressions of different signedness: ‘int’ and ‘uint’ {aka ‘unsigned int’} [-Wsign-compare]
       for(i = 0; i < size(); i++) {
                  ~~^~~~~~~~
algorithm.h: In instantiation of ‘void algorithm<Type>::gauss() [with Type = float]’:
main.cpp:30:13:   required from here
algorithm.h:38:18: warning: comparison of integer expressions of different signedness: ‘int’ and ‘uint’ {aka ‘unsigned int’} [-Wsign-compare]
     for(k = 1; k < size(); k++) { // прямой ход
                ~~^~~~~~~~
algorithm.h:39:20: warning: comparison of integer expressions of different signedness: ‘int’ and ‘uint’ {aka ‘unsigned int’} [-Wsign-compare]
       for(i = k; i < size(); i++) {
                  ~~^~~~~~~~
algorithm.h:41:22: warning: comparison of integer expressions of different signedness: ‘int’ and ‘uint’ {aka ‘unsigned int’} [-Wsign-compare]
         for(j = 0; j < size(); j++) {