c和lua进行的一些基础交互和处理，这里留用lua5.1

#include <iostream>extern "C" {#include "lua.h"#include "lualib.h"#include "lauxlib.h"}static int my_add(lua_State *L){    int a = luaL_checknumber(L, 1);    int b = luaL_checknumber(L, 2);    lua_pushnumber(L, a + b);    return 1;}static const struct luaL_Reg mylib[] = {    {"madd", my_add },    {NULL, NULL}};int main(int argc, char** argv) {    lua_State *L = luaL_newstate();    luaL_openlibs(L);    //=============================================    //c和lua交互部分    lua_pushcfunction(L, my_add);    lua_setglobal(L, "madd"); // lua中调用时 print(madd(10,20))    luaL_register(L, "mylib", mylib); // lua中调用时 local lib require "mylib" print(lib.madd(10,20))    //============================================    //lua调用c函数    // 参考上面    //============================================    //c调用lua函数    lua_getglobal(L, "math");    //lua_pushstring(L, "min");    lua_getfield(L, -1, "pow");    if (lua_isfunction(L, -1))    {        lua_pushinteger(L, 3);        lua_pushinteger(L, 2);        lua_call(L, 2, 1);        printf("result:%d\n", lua_tointeger(L, -1));        lua_pop(L, 1);    }    //============================================    //c中操作lua的表, 索引和kv操作    lua_newtable(L);    lua_pushstring(L, "key");    lua_pushstring(L, "mm");    //由于上面两次压栈，现在table元素排在栈顶往下数第三的位置    lua_settable(L, -3);    //lua_settable会自己弹出上面压入的key和value    for (int i = 1; i < 10; i++) {        lua_pushinteger(L, i);        //lua_pushstring(L, "gogoxxxx" + i);        lua_pushfstring(L, "gogoxxxx%d", i);        lua_settable(L, -3);    }    lua_setglobal(L, "mk");  //lua_settable会自己弹出上面压入的key和value    //============================================    //c中遍历lua的表    lua_getglobal(L, "mk");    size_t n = lua_objlen(L, -1);    for (int i = 1; i <= n; ++i) {        lua_pushinteger(L, i);        lua_gettable(L, -2);        printf("mk[%d] = %s\n", i, lua_tostring(L, -1));        lua_pop(L, 1);    }    printf("========================================\n");    int nIndex = lua_gettop(L);  // 取 table 索引值     lua_pushnil(L);  // nil 入栈作为初始 key     while (0 != lua_next(L, nIndex))    {        printf("mk[N] = %s\n", lua_tostring(L, -1));        lua_pop(L, 1);  // 弹出 value，让 key 留在栈顶     }    // 现在栈顶是 table    lua_pushstring(L, "=====>");    lua_setglobal(L, "kkm");    luaL_dofile(L, "test.lua");    lua_close(L);    system("pause");    return 0;}

lua脚本部分

local lib = require "mylib"print("gogo");print(mk.key);print(mk[1]);print(kkm);print(madd(100, 20))print(lib.madd(120, 20))