1.Provide a single C statement that increases the size of the heap by 10K. 2.Pro

Question

1.Provide a single C statement that increases the size of the heap by 10K.

2.Provide a single UNIX command to print out all lines of an ASCII text file regexp.txt that end with the word “text” or “prose”.

3. What is the memory region associated with single function call that contains local variables and other book-keeping information such as return pointers?

4Provide a C statement to print the message “TROUBLE” to standard error.

5.What is the term for the order and meaning of network messages?

6.What is the value of htons(0xf00d)

for each question please use single sentence do expain

Explanation / Answer

1.Provide a single C statement that increases the size of the heap by 10K.
Ans) malloc(10*1024) is the answer. We can write the same in 'C' as follows.

#defined K (1024)

char *p1;
p1 = malloc(10*K);

2.Provide a single UNIX command to print out all lines of an ASCII text file regexp.txt that end with the word “text” or “prose”.
Ans) egrep 'word$|prose$' regexp.txt is the answer. Following are the details.

Input file:
186590cb0725:Chegg bonkv$ cat regexp.txt
hello word
hello prose
hello pro
hello world and hello word
hello world
how are things

command execution:
186590cb0725:Chegg bonkv$ egrep 'word$|prose$' regexp.txt
hello word
hello prose
hello world and hello word
186590cb0725:Chegg bonkv$

3. What is the memory region associated with single function call that contains local variables and other book-keeping information such as return pointers?
Ans) Stack. Stack stores local variables and other book-keeping information when function calls are invoked.

4Provide a C statement to print the message “TROUBLE” to standard error.
Ans) fprintf(stderr, "%s", "TROUBLE! "); is the answer
If we want to print to stdout or FILE you can specify the same in place of stderr

5.What is the term for the order and meaning of network messages?
Ans) Packet sequencing is the technique used for ordering network messages in network context.

6.What is the value of htons(0xf00d)
Ans) 3568

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