#include <stdio.h>

int main() {
printf("Welcome to your new start 🙌🏻\n") ;

printf("%d . DEC .%d 🗓️\n", 30, 2023);

return 0;
}

#Coming_Soon🥁
#Juniors

https://planetcalc.com/3571/#include

Gaussian elimination Calculator
#EC372

#EC451L
البرنامج الثاني

#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <unistd.h>

int spawn (char* program, char** arg_list)
{
pid_t child_pid;

child_pid = fork();

if(child_pid !=0)
return child_pid;
else {
execvp (program, arg_list);
fprintf (stderr, "an error occurred in execvp\n");
abort();
}
}

int main ()
{
char* arg_list [] = {
"ls",
"-l",
"/",
NULL
};

spawn ("ls", arg_list);

printf("done with main program");

return 0; }

#EC451L
البرنامج الأول
#include <stdio.h>
#include <sys/types.h>
#include <unistd.h>

int main()
{
pid_t child_pid;

printf("the program process ID is %d\n", (int) getpid());

child_pid = fork();
if(child_pid !=0){
printf("this is the parent process, with id %d\n", (int) getpid());
printf("the child's process id is %d\n", (int) child_pid);
}
else
printf(" this is the child process, with id %d\n", (int) getpid());

return 0; }

#EC451L

include <signal.h>
#include <stdio.h>
#include <string.h>
#include <sys/types.h>
#include <unistd.h>

sig_atomic_t sigusr1_count = 0;

void handler (int signal_number)
{
++sigusr1_count;
}

int main()
{
struct sigaction sa;
memset (&sa, 0, sizeof(sa));
sa.sa_handler = &handler;
sigaction (SIGUSR1, &sa, NULL);

while(1)
{
sleep(2);
printf("SIGUSR1 was raised %d times\n", sigusr1_count);}
return 0;}