fork()

A fork() command in C creates a child process with all the context of a parent process and returns the ID of this child process. Both processes (new child and old parent) continue from the return of the fork call.

Info

The fork returns

The child ID if the process is a parent
0 when the process is a child
-1 when there is an error

void main(){
	if(fork() 
	// both processes will continue from here 
	//fork() will return 0 for child and 1 for parent
	!= 0){ 
		printf("Am Parent\n");
	}
	else{
		printf("Am Child);
	}
}