first commit (gaussjordan is bugged)

.gitignore

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+# Xmake cache
+.xmake/
+build/
+
+# MacOS Cache
+.DS_Store
+
+

.vscode/launch.json

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+{
+    // Use IntelliSense to learn about possible attributes.
+    // Hover to view descriptions of existing attributes.
+    // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
+    "version": "0.2.0",
+    "configurations": [
+        {
+            "type": "xmake",
+            "request": "launch",
+            "name": "Debug XMake target",
+            "target": "Pivot",
+            "cwd": "${workspaceFolder}",
+            "stopAtEntry": true
+        }
+    ]
+}

.vscode/settings.json

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+{
+    "files.associations": {
+        "array": "cpp",
+        "atomic": "cpp",
+        "bit": "cpp",
+        "*.tcc": "cpp",
+        "cctype": "cpp",
+        "clocale": "cpp",
+        "cmath": "cpp",
+        "compare": "cpp",
+        "concepts": "cpp",
+        "cstdarg": "cpp",
+        "cstddef": "cpp",
+        "cstdint": "cpp",
+        "cstdio": "cpp",
+        "cstdlib": "cpp",
+        "cwchar": "cpp",
+        "cwctype": "cpp",
+        "deque": "cpp",
+        "string": "cpp",
+        "unordered_map": "cpp",
+        "vector": "cpp",
+        "exception": "cpp",
+        "algorithm": "cpp",
+        "functional": "cpp",
+        "iterator": "cpp",
+        "memory": "cpp",
+        "memory_resource": "cpp",
+        "numeric": "cpp",
+        "random": "cpp",
+        "string_view": "cpp",
+        "system_error": "cpp",
+        "tuple": "cpp",
+        "type_traits": "cpp",
+        "utility": "cpp",
+        "initializer_list": "cpp",
+        "iosfwd": "cpp",
+        "iostream": "cpp",
+        "istream": "cpp",
+        "limits": "cpp",
+        "new": "cpp",
+        "numbers": "cpp",
+        "ostream": "cpp",
+        "stdexcept": "cpp",
+        "streambuf": "cpp",
+        "cinttypes": "cpp",
+        "typeinfo": "cpp"
+    }
+}

.vscode/tasks.json

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+{
+    "tasks": [
+        {
+            "type": "cppbuild",
+            "label": "C/C++: gcc build active file",
+            "command": "/usr/bin/gcc",
+            "args": [
+                "-fdiagnostics-color=always",
+                "-g",
+                "${file}",
+                "-o",
+                "${fileDirname}/${fileBasenameNoExtension}"
+            ],
+            "options": {
+                "cwd": "${fileDirname}"
+            },
+            "problemMatcher": [
+                "$gcc"
+            ],
+            "group": {
+                "kind": "build",
+                "isDefault": true
+            },
+            "detail": "Task generated by Debugger."
+        }
+    ],
+    "version": "2.0.0"
+}

src/main.cpp

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+#include <iostream>
+#include <vector>
+#include <algorithm>
+
+template <typename T>
+class Matrix
+{
+private:
+    std::size_t m_Lignes;
+    std::size_t m_Colonnes;
+    std::size_t m_Dimension;
+    std::vector<T> m_Data;
+
+public:
+    Matrix(std::size_t lignes, std::size_t colonnes) : m_Lignes(lignes), m_Colonnes(colonnes), m_Dimension(lignes * colonnes)
+    {
+        m_Data.resize(m_Dimension);
+    }
+    ~Matrix() {}
+
+    void Print() const
+    {
+        for (size_t i = 0; i < m_Lignes; ++i)
+        {
+            std::cout << "[ ";
+            for (size_t j = 0; j < m_Colonnes; ++j)
+            {
+                std::size_t indice = i * m_Lignes + j;
+                std::cout << at(i, j) << " ";
+            }
+            std::cout << "]";
+            std::cout << std::endl;
+        }
+    }
+    void Insert()
+    {
+        for (size_t i = 0; i < m_Lignes; ++i)
+        {
+            for (size_t j = 0; j < m_Colonnes; ++j)
+            {
+                std::cin >> at(i, j);
+            }
+            std::cout << std::endl;
+        }
+    }
+
+    void DivideLine(T div, std::size_t line){
+        for (size_t i = 0; i < count; i++)
+        {
+            /* code */
+        }
+        
+    }
+
+    void GaussJordan()
+    {
+        int r = -1;
+        for (std::size_t j = 0; j < m_Colonnes; ++j)
+        {
+            std::size_t k = 0;
+            // Rechercher
+            for (std::size_t i = r + 1; i < m_Lignes; ++i)
+            {
+                if (at(i, j) > at(k, j))
+                {
+                    k = i;
+                }
+            }
+            Matrix<float> mat_pivot(1, 1);
+            mat_pivot.at(0, 0) = at(k, j);
+            if (at(k, j) != 0)
+            {
+                ++r;
+                // Diviser
+                for (std::size_t z = 0; z < m_Colonnes; ++z)
+                {
+                    at(k, z) /= mat_pivot.at(0, 0);
+                }
+                if (k != r)
+                {
+                    // Echanger
+                    for (std::size_t z = 0; z < m_Colonnes; ++z)
+                    {
+                        std::swap(at(k, z), at(r, z));
+                    }
+                }
+                for (std::size_t i = 0; i < m_Lignes; ++i)
+                {
+                    if (i != r)
+                    {
+                        //Soustraire
+                        for (std::size_t z = 0; z < m_Colonnes; ++z)
+                        {
+                            at(i, z) -= at(r, z) * at(i, j);
+                        }
+                    }
+                }
+            }
+        }
+    }
+
+    T &operator[](std::size_t indice)
+    {
+        return at(indice);
+    }
+
+    T &at(std::size_t ligne, std::size_t colonne)
+    {
+        return m_Data[ligne * m_Lignes + colonne];
+    }
+
+    T at(std::size_t ligne, std::size_t colonne) const
+    {
+        return m_Data[ligne * m_Lignes + colonne];
+    }
+
+    /*std::vector<T>::iterator begin() {
+        return m_Data.begin();
+    }
+
+    std::vector<T>::iterator end() {
+        return m_Data.end();
+    }*/
+};
+
+/*
+void test()
+{
+    Matrix<float> mat(2, 2);
+    mat.at(0, 0) = 4;
+    mat.at(0, 1) = 3;
+    mat.at(1, 0) = 2;
+    mat.at(1, 1) = 1;
+
+    mat.Print();
+    mat.GaussJordan();
+    mat.Print();
+}
+*/
+
+int main(int argc, char **argv)
+{
+    //test();
+    
+    std::cout << "hello world!" << std::endl;
+    std::cout << "Quelle est le nombre de lignes de votre matrice ?" << std::endl;
+    std::size_t lignes;
+    std::cin >> lignes;
+    std::cout << "Quelle est le nombre de colonnes de votre matrice ?" << std::endl;
+    std::size_t colonnes;
+    std::cin >> colonnes;
+    std::size_t dimension = lignes * colonnes;
+    std::cout << "Rentrez les coefficients de la matrice" << std::endl;
+    Matrix<float> mat(lignes, colonnes);
+
+    mat.Insert();
+
+    mat.Print();
+    mat.GaussJordan();
+    std::cout << std::endl;
+    mat.Print();
+    
+    return 0;
+}

xmake.lua

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+add_rules("mode.debug", "mode.release")
+
+target("Pivot")
+    set_kind("binary")
+    add_files("src/*.cpp")
+
+--
+-- If you want to known more usage about xmake, please see https://xmake.io
+--
+-- ## FAQ
+--
+-- You can enter the project directory firstly before building project.
+--
+--   $ cd projectdir
+--
+-- 1. How to build project?
+--
+--   $ xmake
+--
+-- 2. How to configure project?
+--
+--   $ xmake f -p [macosx|linux|iphoneos ..] -a [x86_64|i386|arm64 ..] -m [debug|release]
+--
+-- 3. Where is the build output directory?
+--
+--   The default output directory is `./build` and you can configure the output directory.
+--
+--   $ xmake f -o outputdir
+--   $ xmake
+--
+-- 4. How to run and debug target after building project?
+--
+--   $ xmake run [targetname]
+--   $ xmake run -d [targetname]
+--
+-- 5. How to install target to the system directory or other output directory?
+--
+--   $ xmake install
+--   $ xmake install -o installdir
+--
+-- 6. Add some frequently-used compilation flags in xmake.lua
+--
+-- @code
+--    -- add debug and release modes
+--    add_rules("mode.debug", "mode.release")
+--
+--    -- add macro definition
+--    add_defines("NDEBUG", "_GNU_SOURCE=1")
+--
+--    -- set warning all as error
+--    set_warnings("all", "error")
+--
+--    -- set language: c99, c++11
+--    set_languages("c99", "c++11")
+--
+--    -- set optimization: none, faster, fastest, smallest
+--    set_optimize("fastest")
+--
+--    -- add include search directories
+--    add_includedirs("/usr/include", "/usr/local/include")
+--
+--    -- add link libraries and search directories
+--    add_links("tbox")
+--    add_linkdirs("/usr/local/lib", "/usr/lib")
+--
+--    -- add system link libraries
+--    add_syslinks("z", "pthread")
+--
+--    -- add compilation and link flags
+--    add_cxflags("-stdnolib", "-fno-strict-aliasing")
+--    add_ldflags("-L/usr/local/lib", "-lpthread", {force = true})
+--
+-- @endcode
+--
+