Презентация powerpoint · 2020-01-28 · Презентация powerpoint author:...
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![Page 1: Презентация PowerPoint · 2020-01-28 · Презентация PowerPoint Author: Ekaterina Matveeva Created Date: 8/12/2019 5:28:31 PM](https://reader033.vdokument.com/reader033/viewer/2022050607/5fae22e80a81b574486cd1fc/html5/thumbnails/1.jpg)
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int A = 0;Foo(A = 2, A);
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int B = (-1) >> 5;
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void foo(){....int A[10];...A[22] = 10;...
}
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struct Base {virtual ~Base() = default;virtual void f();
};
struct Derived : Base {};
void f() {Base *b = new Derived();// ...delete b;
}
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T
malloc
new
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N T T T
malloc
new []
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static int podhd_try_init(struct usb_interface *interface,struct usb_line6_podhd *podhd)
{int err;struct usb_line6 *line6 = &podhd->line6;
if ((interface == NULL) || (podhd == NULL))return -ENODEV;
....}
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#define offsetof(st, m) ((size_t)(&((st *)0)->m))
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static int podhd_try_init(struct usb_interface *interface,struct usb_line6_podhd *podhd)
{int err;struct usb_line6 *line6 = &podhd->line6;
if ((interface == NULL) || (podhd == NULL))return -ENODEV;
....}
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static voidst_collections_group_parts_part_description_filter_data(void){....filter->data_count++;array = realloc(filter->data,sizeof(Edje_Part_Description_Spec_Filter_Data) *filter->data_count);
array[filter->data_count - 1].name = name;array[filter->data_count - 1].value = value;filter->data = array;
}
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• 11...11111111111101b
• 11...11111111111001b
• 11...11111111110001b
• 11...11111111100001b
• ....
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/* entry n is (-1 << n) + 1 */static const int extend_offset[16] = { 0,((-1)<<1) + 1, ((-1)<<2) + 1, ((-1)<<3) + 1,((-1)<<4) + 1, ((-1)<<5) + 1, ((-1)<<6) + 1,((-1)<<7) + 1, ((-1)<<8) + 1, ((-1)<<9) + 1,((-1)<<10) + 1, ((-1)<<11) + 1, ((-1)<<12) + 1,((-1)<<13) + 1, ((-1)<<14) + 1, ((-1)<<15) + 1
};
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static const unsigned extend_offset[16] ={ 0,((~0u)<<1) | 1, ((~0u)<<2) | 1, ((~0u)<<3) | 1,((~0u)<<4) | 1, ((~0u)<<5) | 1, ((~0u)<<6) | 1,((~0u)<<7) | 1, ((~0u)<<8) | 1, ((~0u)<<9) | 1,((~0u)<<10) | 1, ((~0u)<<11) | 1, ((~0u)<<12) | 1,((~0u)<<13) | 1, ((~0u)<<14) | 1, ((~0u)<<15) | 1
};
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size_t Count = (size_t)(5) * 1024 * 1024 * 1024; // 5 Gb
char *array = (char *)malloc(Count);memset(array, 0, Count);
int index = 0;for (size_t i = 0; i != Count; i++)array[index++] = (char)(i) | 1;
if (array[Count - 1] == 0)printf("The last array element contains 0.\n");
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int foo(const unsigned char *s){int r = 0;while(*s) {
r += ((r * 20891 + *s *200) | *s ^ 4 | *s ^ 3) ^ (r >> 1);s++;
}return r & 0x7fffffff;
}
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int foo(const unsigned char *s){int r = 0;while(*s) {
r += ((r * 20891 + *s *200) | *s ^ 4 | *s ^ 3) ^ (r >> 1);s++;
}return r & 0x7fffffff;
}
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