Arjun Suresh (talk | contribs) |
Arjun Suresh (talk | contribs) |
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kill(pid, 9);// kills the child | kill(pid, 9);// kills the child | ||
− | + | if(!printf("Failed\n")) | |
− | + | printf("l = %u",l);// for ensuring the code remains after optimization | |
} | } | ||
The program should wait for a name to be entered by the user and then display "Thank you". If no input is given for 10s, the program should exit with output "Failed".
<syntaxhighlight lang="C" name="fork">
int main() { unsigned i, l = 0, j; int status; char name[100]; pid_t pid; pid = fork();//child starts if(pid == 0)//pid = 0 for child only {
printf("Enter name: ");
fgets(name, 100, stdin); printf("Thank you\n"); kill(getppid(), 9);//kills the parent return;// child finishes here } for(i = 0; i < 500000; i++) for(j = 0; j < 10000; j++) l++; // l is used so that compiler just won't remove the loop for optimization if(waitpid(pid, &status, WNOHANG) == 0)//Child still running { kill(pid, 9);// kills the child
if(!printf("Failed\n")) printf("l = %u",l);// for ensuring the code remains after optimization }
}
</syntaxhighlight>
The program should wait for a name to be entered by the user and then display "Thank you". If no input is given for 10s, the program should exit with output "Failed".
<syntaxhighlight lang="C" name="fork">
int main() { unsigned i, l = 0, j; int status; char name[100]; pid_t pid; pid = fork();//child starts if(pid == 0)//pid = 0 for child only {
printf("Enter name: ");
fgets(name, 100, stdin); printf("Thank you\n"); kill(getppid(), 9);//kills the parent return;// child finishes here } for(i = 0; i < 500000; i++) for(j = 0; j < 10000; j++) l++; // l is used so that compiler just won't remove the loop for optimization if(waitpid(pid, &status, WNOHANG) == 0)//Child still running { kill(pid, 9);// kills the child
if(!printf("Failed\n")) printf("l = %u",l);// for ensuring the code remains after optimization }
}
</syntaxhighlight>