WAIT SYSTEM CALL
AIM:
To write a c program to implement wait system calls.
ALGORITHM:
STEP 1: Start the program.
STEP 2: Include the header files.
STEP 3: Declare the variable pid and assign i=0,pid=fork( ).
STEP 4: If pid=0 then child starts.
STEP 5: For i=0,i less than 10 print the value of i.
STEP 6: Child process ends.
STEP 7: Else child ends now in parent process.
STEP 8: Stop the program.
PROGRAM:
#include<stdio.h>
#include<sys/wait.h>
int main()
{
int pid,i=0;
printf("\n ready to fork");
pid=fork();
if(pid==0)
{
printf("\n child starts\n");
for(i=0;i<10;i++)
printf("\n%d\n",i);
printf("child ends\n");
exit(0);
}
else
{
wait(0);
printf("child ends now in parent process");
printf("exist status");
}
}
OUTPUT:
$./a.out
Ready to fork
Child starts
0
1
2
3
4
5
6
7
8
9
Child ends
Ready to fork child ends now in parent process
exit status
