Operating Systems · Processes, Threads and IPC
Official IIT answer key · IIT Roorkee · Audited Aug 2026
GATE CSE 2026 Set 1 Q63 · NAT · 2 marks
fork() system call is always successful in creating a process.
int main () {
int i;
for (i = 0; i < 3; i++){
if (fork() == 0){
continue;
}
break;
}
printf("Hello!");
return 0;
}
The total number of times that the printf statement gets executed is ________. (answer in integer)Key concept
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Topic notes
GATE evaluates the 'Processes' topic primarily through the standard 5-state process lifecycle (New, Ready, Running, Blocked/Waiting, Terminated) and the valid/invalid transitions between these states. Questions consistently test the exact path of a process during execution, preemption, and I/O invocation. Recent trends show a progression from purely theoretical transition checks (MCQ/MSQ) to procedural tracing of state changes in C code execution (NAT).
Full Processes, Threads and IPC guide →Consider the following program snippet. Assume that the program compiles and runs successfully. Further, assume that the fork() system call is always successful in creating a process. int main () int i; for (i = 0; i The total number of times that the printf statement gets executed is … (answer in integer)
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