pid of a process in c

To get the process ID (pid) of a process in C, you can use the getpid() function from the unistd.h header file. This function returns the process ID of the current process.

Here is an example code snippet:

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

int main() {
    pid_t pid = getpid();
    printf("Process ID: %d\n", pid);
    return 0;
}

This code includes the necessary header files and defines a main() function. Inside the main() function, the getpid() function is called and its return value is stored in a variable pid of type pid_t. The process ID is then printed using printf().

When you run this code, it will display the process ID of the current process.