user:mgardne8:portfolio:notescrap
Differences
This shows you the differences between two versions of the page.
| Both sides previous revisionPrevious revisionNext revision | Previous revisionLast revisionBoth sides next revision | ||
| user:mgardne8:portfolio:notescrap [2014/09/02 14:03] – mgardne8 | user:mgardne8:portfolio:notescrap [2014/09/02 14:28] – mgardne8 | ||
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| Line 1: | Line 1: | ||
| __Pointers__ | __Pointers__ | ||
| + | int = 4 bytes | ||
| + | short = 2 bytes | ||
| - | Grid - 1byte = 8bits | + | Int a = 5; (43; |
| + | Int b = 6; (47; | ||
| + | Short j = 2; (53;54) | ||
| + | Short k = 1; (55;56) | ||
| + | Int *c = &a; (57; | ||
| + | | ||
| + | [* = Dereferencing operator] | ||
| + | Short q = 77; (67;70) | ||
| - | 2^8 - 256 | + | |0|1|2|3|4|5|6|7| |
| - | Int a; | + | ------------------ |
| - | |0|1|2|3|4|5|6|7|8| | + | 0| | | | | | | | | |
| - | | + | ------------------ |
| - | 0| | | | | | | | | | | + | 1| | | | | | | | | |
| - | | + | ------------------ |
| - | 1| | | | | | | | | | | + | 2| | | | | | | | | |
| - | | + | ------------------ |
| - | 2| | | | | | | | | | | + | 3| | | | | | | | | |
| - | | + | ------------------ |
| - | 3| | | | | | | | | | | + | 4| | | |a|a|a|a|b| |
| - | | + | ------------------ |
| - | 4| | | | | | | | | | | + | 5|b|b|b|j|j|k|k|c| |
| - | | + | ------------------ |
| - | 5| | | | | | | | | | | + | 6|c|c|c|c|c|c|c|q| |
| - | | + | ------------------ |
| - | 6| | | | | | | | | | | + | 7|q| | | | | | | | |
| - | | + | ------------------ |
| - | 7| | | | | | | | | | | + | |
| - | | + | |
| - | 8| | | | | | | | | | | + | |
| - | -------------------- | + | |
| - | __________________________________________ | + | ---------------------------- |
| - | bc -l | + | Grid - 1byte = 8bits |
| + | ---------------------------- | ||
| + | | ||
| + | 2^8 = 256 | ||
| + | 2^16 = 65536 | ||
| + | 2^32 = 4294967296 | ||
| + | 2^64 = 18446744073709551616 | ||
| + | --------------------------- | ||
| + | X64 0x0000000000000000 | ||
| + | --------------------------- | ||
| - | 2^8 | + | int g[4]; |
| + | int *g=(int *)malloc(sizeof(int)*4); | ||
| + | |||
| + | g[0] | ||
| + | g[1] | ||
| + | *(g+2) = 13; | ||
| + | g[2] = 13; | ||
| - | 2^16 = 65536 | ||
| - | |||
| - | 2^32 = 4294967296 | ||
| - | |||
| - | 2^64 = 18446744073709551616 | ||
| - | __________________________________________ | ||
| - | |||
| - | X64 0x0000000000000000 | ||
| - | |||
| - | int = 4 bytes | ||
| - | short = 2 bytes | ||
user/mgardne8/portfolio/notescrap.txt · Last modified: 2014/09/02 14:34 by mgardne8
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