C program to get Process Id and Parent Process Id in Linux.

This program will get the Process Id and Parent Process Id of the current Process in C programming Linux.

Here we are using two functions getpid() to get Process Id and getppid() to get Parent Process Id of the current process. These functions are declared in <unistd.h> header file.

Process Id and Process Parent Id using C program


/*C program to get Process Id and Parent Process Id in Linux.*/

#include <stdio.h>
#include <unistd.h>

int main()
{
    int p_id,p_pid;
    
    p_id=getpid();  /*process id*/
    p_pid=getpid(); /*parent process id*/
    
    printf("Process ID: %d\n",p_id);
    printf("Parent Process ID: %d\n",p_pid);

    return 0;
}

    Process ID: 1298
    Parent Process ID: 879