Created
October 12, 2019 17:07
-
-
Save vasalf/6e59efe0bee4daa2839d08d1d2ae43b7 to your computer and use it in GitHub Desktop.
Практика 5': Упражнения на указатели
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
void task1() { | |
int x = 179; | |
int* p = &x; | |
int** n = malloc(sizeof(int*)); | |
} | |
/* | |
Какой тип у выражений? | |
1. p | |
2. *p | |
3. &p | |
4. *n | |
5. **n | |
6. &n | |
7. &(&n) | |
*/ | |
void task2() { | |
int x[10] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9}; | |
} | |
/* | |
Чему равно выражение? | |
1. *x | |
2. *(x + 5) | |
3. &x[0] - x | |
4. &x[4] - x | |
5. (void*)(&x[4]) - (void*)x | |
6. (void*)(&x[100]) - (void*)(&x[99]) | |
*/ | |
struct point { | |
int x, y; | |
} __attribute__((packed)); | |
void task3() { | |
struct point p; | |
struct point* ptr = &p; | |
} | |
/* | |
Какой тип у выражений? | |
1. p | |
2. p.x | |
3. &p | |
4. *p | |
5. ptr | |
6. &ptr | |
7. ptr->x | |
8. &p.x | |
9. &ptr->x | |
*/ | |
struct foo { | |
int x; | |
char c; | |
struct point p, q; | |
int a[19]; | |
short w; | |
struct point r[10]; | |
} __attribute__((packed)); | |
void task4() { | |
struct foo f; | |
} | |
/* | |
Чему равно выражение? | |
1. sizeof(struct foo) | |
2. sizeof(f.x) | |
3. (void*)(&f.x) - (void*)(&f) | |
4. (void*)(&f.c) - (void*)(&f) | |
5. (void*)(&f.a) - (void*)(&f) | |
6. (void*)(&f.a[10]) - (void*)(&f) | |
7. (void*)(&f.p.x) - (void*)(&f.x) | |
8. (void*)(&f.r[3].x) - (void*)(&f) | |
*/ |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment