Computers and Technology, 06.05.2020 01:41 winterblanco
Design and implement a simple shell program (in C programming language) to set a timer to terminate the program after one minute being idle. That is, if there is no command input within one minute after the prompt, then the program will be interrupted by the timer and the timer-handler will terminate the program. Further the program should take an input command to set a timer interval. The following command will set the timer for 30 seconds: timer=30When the program got the timer interrupt (for example, after 30 seconds of idle time), it prints the message saying: "the program is terminated due to the idle time over 30 seconds."A sample code to set a timer for 30 seconds:// Sample code to set a timer to interrupt after some time (to terminate the run). #include #include #include #include #include static int timer_expired = 0; static void alarm_handler(int sig) { timer_expired=30; } int main() { // Set up a signal hander to call alarm_handler() // when SIGALRM is raised sigaction(SIGALRM, &(struct sigaction){.sa_handler = alarm_handler}, NULL); time_t t; srand((unsigned) time(&t)); timer_expired = 0; alarm(1); // raise SIGALRM in 1 seconds while (!timer_expired) { int s=(rand()%4)+1; printf("%d", s); } return 0;
Answers: 3
Computers and Technology, 22.06.2019 02:30
Larry sent an email to andy. andy didn't open larry's email but still understood what the message was. how did andy determine the message without opening the email?
Answers: 1
Computers and Technology, 23.06.2019 15:00
Barbara is interested in pursuing a career in the science and math pathway. which qualifications will her reach that goal? a.an advanced knowledge of physics and math b.an advanced knowledge of engineering and math c. an advanced knowledge of physics and robotics an d. advanced knowledge of machinery and math
Answers: 2
Computers and Technology, 24.06.2019 12:30
Select all that apply. what two keys listed below should you use to enter data in an excel worksheet? tab backspace enter right arrow
Answers: 2
Computers and Technology, 24.06.2019 13:30
What process should be followed while giving a reference? sam has given a reference of his previous manager in his resume. sam should him in advance that the potential employers will him.
Answers: 1
Design and implement a simple shell program (in C programming language) to set a timer to terminate...
Advanced Placement (AP), 18.10.2020 14:01
English, 18.10.2020 14:01
Physics, 18.10.2020 14:01
Mathematics, 18.10.2020 14:01
Mathematics, 18.10.2020 14:01
Mathematics, 18.10.2020 14:01
Physics, 18.10.2020 14:01
Mathematics, 18.10.2020 14:01
Mathematics, 18.10.2020 14:01
Mathematics, 18.10.2020 14:01
Social Studies, 18.10.2020 14:01