luaL_loadbuffer

  #include <stdio.h>    #include <string.h>    #include <lua.h>    #include <lauxlib.h>    #include <lualib.h>        int main (void) {      char buff[256];      int error;      lua_State *L = lua_open();   /* opens Lua */      luaopen_base(L);             /* opens the basic library */      luaopen_table(L);            /* opens the table library */      luaopen_io(L);               /* opens the I/O library */      luaopen_string(L);           /* opens the string lib. */      luaopen_math(L);             /* opens the math lib. */          while (fgets(buff, sizeof(buff), stdin) != NULL) {        error = luaL_loadbuffer(L, buff, strlen(buff), "line") ||                lua_pcall(L, 0, 0, 0);        if (error) {          fprintf(stderr, "%s", lua_tostring(L, -1));          lua_pop(L, 1);  /* pop error message from the stack */        }      }          lua_close(L);      return 0;    }