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c programming
#include <stdio.h> int main() { int i = -1; int x = (unsigned char)i; printf("%d", x); return 0; } output is 255 , but please explain how
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Programming in C
Feb 29
217
views
programming-in-c
0
votes
0
answers
2
memory management
we have 8 pages (each side 32B) to store in physical memory of 2^32 bits how many bits are required to identify each page , according to me 3 bits are required but that is wrong plz explain why
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in
Operating System
Feb 8
187
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memory-management
operating-system
paging
virtual-memory
0
votes
1
answer
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synchronization
bool p1_in_crit_sect = false; bool p2_in_crit_sect = false; while (true) { while (p2_in_crit_sect == true) ; /* do nothing */ p1_in_crit_sect = true; /* ... critical section ... */ p1_in_crit_sect = false; } while (true) { while (p1_in_crit_sect == true ... do nothing */ p2_in_crit_sect = true; /* ... critical section ... */ p2_in_crit_sect = false; } is mutual exclusion satisfied?
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in
Operating System
Jan 26
87
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