I''ve been learning C for 2 years(part of my course). And i dont know anything about C++ at all. Until recently i tried to write my own game, so i downloaded some of the online tutorials(from http://www.gametutorials.com/Tutorials/Win32/), got myself a copy of VC++ 6.0 and started my game in WIN32. I''m about 1/3 of my game now, and i did everything in my normal C fashion, but i save my code with .cpp extension so i thought i''m programming in C++. As a result, I thought C and C++ isn''t that much different after all, at least i when i do the same thing my program still works. Then i came to this forum and see lots of post about C/C++, how different they are, why u should learn one instead of the other, the bad habbits when u switch from one to another. I''m a bit confused now(my code is very much similar to those tutorials),so am i programming in C or C++? does the extension of the source code file matter? If i am programming in C now, should i change to C++? and how can i know i''m actually doing it in C++??? As english is not my 1st language, u may not be able to understand what i mean, but basically my main question is if u give me a piece of code how can i tell if it is a C++ code or C code?

quote:Original post by OrangyTang
Since C++ is a superset of C

Nitpick... but try compiling this (pointless) C program with a C++ compiler.

#include <stdbool.h>#include <stdio.h>struct my_struct{  int a;  int b;  int c[50];}int main(int argc, char** argv){  _Bool someBool = 1;  long long bigNumber;  int a,b;  struct my_struct stuff = {.b = 50, .a = 123};  struct my_struct moreStuff = {.c[20] = 33};    a = b = 5;  int myArray[a*b];  int * class = (int[]){1,2};  int * restrict class_ptr = class;  printf("Hi, welcome to %s.\n", __func__);  return 0; } 

quote:Original post by OrangyTang
When people say "C or C++?" most of the time what they''re really refering to is "procedural or object-orientated?".

"Object-oriented." "Orientated" has to do with sense of direction.

C++ is not a strict superset of C, unfortunately. C99 introduced features that break C++, and I expect the two languages to continue to grow apart, so don''t get too used to the notion. Furthermore, the differences in C and C++ programming don''t refer simply to procedural vs OO but also to notions of type safety, common language constructs (do you need to typedef a struct? yes in C, no in C++) and conventions (C supports some interesting function prototype syntaxes; doesn''t require that a function declared with a return type necessarily return a value - an assumption is made, which is anathema to C++''s focus on typesafety; widely performs implicit type conversions and so forth). Standards-enforcing C++ compilers will spew dozens of warnings and errors on standard C.

dunno about your compilers guys, but as soon as I compile a file named *.c it''s automatically compiled as a C program and not a C++ program...

Oh, and Ive always thought of what you call C++ as C/C++ and not C and C++ as two separate languages. When the day comes when you can''t write a program with C syntax in C++ I will gladly call "C/C++" only C++...

Also std::string and anything inside the std namespaces has nothing to do with the language C++ except that it''s written in C++. std::string or whatever isn''t part of the C++ language until they are keywords or considered as datatypes just like char or int or whatever....

quote:Original post by Anonymous Poster
When the day comes when you can''t write a program with C syntax in C++ I will gladly call "C/C++" only C++...

That day has come.

#include <stdlib.h>#include <string.h>typedef struct {  int n;  int array[];} MyStruct;int main(void) {  long double _Complex a = {1, 1};  _Bool b = 1;  long long c = 1;  int n = 50;  long array[n];  for (size_t i = 0; i < n; i++) { array[i] = i; }  int template = 5;  int bool = 5;  int new = 5;  int class = 5;  MyStruct *something = malloc((sizeof *something) + n * sizeof *something->array);  *something = (MyStruct){ .n = n };  memcpy(something->array, array, sizeof array);}

All perfectly legal C (syntax and otherwise), but I don''t think it''s legal C++.