Computer Science Engineering (CSE) Exam > Computer Science Engineering (CSE) Questions > A process executes the codefork();fork();fork...
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A process executes the code
fork();
fork();
fork();
fork();
fork();
The total number of child processes created is
- a)3
- b)4
- c)7
- d)8
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
A process executes the codefork();fork();fork();The total number of ch...
Let us put some label names for the three lines
fork (); // Line 1
fork (); // Line 2
fork (); // Line 3
L1 // There will be 1 child process created by line 1
/ \
L2 L2 // There will be 2 child processes created by line 2
/ \ / \
L3 L3 L3 L3 // There will be 4 child processes created by line 3
We can also use direct formula to get the number of child processes. With n fork statements, there are always 2^n – 1 child processes. Also see this post for more details.
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Most Upvoted Answer
A process executes the codefork();fork();fork();The total number of ch...
Explanation:
When a process executes the code fork();fork();fork();, it creates child processes in the following manner:
First fork() call: It creates one child process, so there are now two processes (the parent and the child).
Second fork() call: Both the parent and the child process created in the first call execute the second fork() call. This creates two more child processes, making the total number of processes four (one parent and three child processes).
Third fork() call: Now, all four processes execute the third fork() call, creating four more child processes, making the total number of processes seven (one parent and six child processes).
So, the correct answer is option C (7).
HTML:
Explanation:
So, the correct answer is option C (7).
When a process executes the code fork();fork();fork();, it creates child processes in the following manner:
First fork() call: It creates one child process, so there are now two processes (the parent and the child).
Second fork() call: Both the parent and the child process created in the first call execute the second fork() call. This creates two more child processes, making the total number of processes four (one parent and three child processes).
Third fork() call: Now, all four processes execute the third fork() call, creating four more child processes, making the total number of processes seven (one parent and six child processes).
So, the correct answer is option C (7).
HTML:
Explanation:
- First fork() call: It creates one child process, so there are now two processes (the parent and the child).
- Second fork() call: Both the parent and the child process created in the first call execute the second fork() call. This creates two more child processes, making the total number of processes four (one parent and three child processes).
- Third fork() call: Now, all four processes execute the third fork() call, creating four more child processes, making the total number of processes seven (one parent and six child processes).
So, the correct answer is option C (7).
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A process executes the codefork();fork();fork();The total number of child processes created isa)3b)4c)7d)8Correct answer is option 'C'. Can you explain this answer?
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