-
Notifications
You must be signed in to change notification settings - Fork 0
/
Collatz.c
55 lines (45 loc) · 1.38 KB
/
Collatz.c
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
//Rraheem Was Here!
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/wait.h>
int main(){
int number;
pid_t child1, child2;
printf("Please enter a number: ");
scanf("%d", &number);
printf("collatz %d\n", number);
int stepCnt = 1;
while(number != 1){
if (number % 2 == 0) {
//this is the first child process
child1 = fork();
if(child1 == 0) {
printf("From Child1, pid=%d: number=%d is even\n", getpid(), number);
exit(0);
} else if (child1 < 0){
printf("Child1 was not forked successfully. \n");
}
wait(NULL);
number = number / 2;
stepCnt++;
} else {
//this is the second child process
child2 = fork();
if(child2 == 0) {
printf("From Child2, pid=%d: number=%d is odd\n", getpid(), number);
exit(0);
} else if (child2 < 0){
printf("Child2 was not forked successfully. \n");
}
wait(NULL);
number = 3 * number + 1;
stepCnt++;
}
}
printf("Total steps in this collatz was: %d \n", stepCnt);
printf("All my Children Complete\n");
printf("Rraheem was here!");
return 0;
}