An introduction to the c++ programming language for game engine development.

2. ‫آرایه‬
‫گر‬ ‫اشاره‬
Reference

3. ‫آرایه‬ ‫تعریف‬
char c[20];
‫آرایه‬ ‫عناصر‬ ‫به‬ ‫دسترسی‬
‫شوند‬ ‫می‬ ‫شروع‬ ‫صفر‬ ‫از‬ ‫آرایه‬ ‫عناطر‬
c[0], c[1] , …, c[19]

4. 1. void copy_fct()
2. {
3. int v1[10] = {0,1,2,3,4,5,6,7,8,9};
4. int v2[10]; // To become a copy of v1
5.
6. for (int i=0; i!=10;++i) // Copy elements
7. v2[i] = v1[i];
8. }
1. void print()
2. {
3. int v[] = {0,1,2,3,4,5,6,7,8,9};
4.
5. for (int i=0; i!=10; ++i)
6. cout << v[i] << 'n';
7. }

5. 1. void increment()
2. {
3. int v[] = {0,1,2,3,4,5,6,7,8,9};
4.
5. for (int i=0; i!=10; ++i)
6. ++v[i];
7. }

6. ‫گر‬ ‫اشاره‬ ‫کردن‬ ‫تعریف‬
char* x;
char* p = &v[3];
double* pd = nullptr;

7. ‫یا‬ ‫رشته‬String
const char* str="This is a string";
const char str[]={'T','h','i‘,...,'g',0};
‫گر‬ ‫اشاره‬void*
int* pi = &i;
void* pv = pi;
‫تابع‬ ‫به‬ ‫گر‬ ‫اشاره‬
int f(char c, float f);
int (*pf)(char, float) = f;

8. 1. // Count the number of occurrences of x in p[]
2. // p is assumed to point to a zero-terminated
3. // array of char (or to nothing)
4. int count_x(char* p, char x)
5. {
6. if (p == nullptr) return 0;
7.
8. int count = 0;
9. for (; *p!=0; ++p)
10. if (*p == x)
11. ++count;
12. return count;
13. }

9. ‫کردن‬ ‫تعریف‬reference
int& count;
char& chr;
Reference‫باشد‬ ‫خالی‬ ‫نمیتواند‬ ‫وقت‬ ‫هیچ‬
char c;
int i;
int& count = i;
char& chr = c;