The corresponding script file is here.
2. Tracing the code (Assuming the value k=5 was entered).
10 printf("Enter the value of k=");
11 scanf("%d", &k);
12 i=0; /* counter of iterations*/
13 while (k!=1)
14 {
15 printf("i=%d, k=%d\n",i, k); /* printing current values of i and k */
16 /* Computing new value of k (Collatz map) */
17 if (k%2==0)
18 k=k/2;
19 else
20 k=3*k+1;
21 i++; /* Incrementing counter */
22 }
23 printf("Done: i=%d, k=%d\n",i, k); /* printing final values of i and k */
line # of| i | k | true/false cond. / Output
the code | | | / Comments
-------------------------------------------------
10 | ? | ? | print: "Enter the value of k="
-------------------------------------------------
11 | ? | 5 | print: "5" (entered by user)
-------------------------------------------------
12 | 0 | 5 |
-------------------------------------------------
13 | 0 | 5 | loop entered, (5!=1): true
-------------------------------------------------
15 | 0 | 5 | print: "i=0, k=5"
-------------------------------------------------
17 | 0 | 5 | 5%2=1, (1==0): false, jump to 20.
-------------------------------------------------
20 | 0 | 16 | 3*5+1=16
-------------------------------------------------
21 | 1 | 16 | 0+1=1
--------------------------------------------------------
13 | 1 | 16 | (16!=1): true
-------------------------------------------------
15 | 1 | 16 | print: "i=1, k=16"
-------------------------------------------------
17 | 1 | 16 | 16%2=0, (0==0): true
-------------------------------------------------
18 | 1 | 8 | 16/2=8
-------------------------------------------------
21 | 2 | 8 | 1+1=2
--------------------------------------------------------
13 | 2 | 8 | (8!=1): true
-------------------------------------------------
15 | 2 | 8 | print: "i=2, k=8"
-------------------------------------------------
17 | 2 | 8 | 8%2=0, (0==0): true
-------------------------------------------------
18 | 2 | 8 | 8/2=4
-------------------------------------------------
21 | 3 | 4 | 2+1=3
--------------------------------------------------------
13 | 3 | 4 | (4!=1): true
-------------------------------------------------
15 | 3 | 4 | print: "i=3, k=4"
-------------------------------------------------
17 | 3 | 4 | 4%2=0, (0==0): true
-------------------------------------------------
18 | 3 | 4 | 4/2=2
-------------------------------------------------
21 | 4 | 2 | 3+1=4
--------------------------------------------------------
13 | 4 | 2 | (2!=1): true
-------------------------------------------------
15 | 4 | 2 | print: "i=4, k=2"
-------------------------------------------------
17 | 4 | 2 | 2%2=0, (0==0): true
-------------------------------------------------
18 | 4 | 2 | 2/1=1
-------------------------------------------------
21 | 5 | 1 | 4+1=5
--------------------------------------------------------
13 | 5 | 1 | (1!=1): false, loop exited
-------------------------------------------------
23 | 5 | 1 | print: "Done: i=5, k=1"
3. (a) 10.0+15/2+4.3 = 10.0+ 7(int) +4.3 = 20.3 (double)
(b) 10.0+15%2+4.3 = 10.0 + 1 +4.3 = 15.3 (double)
(g) 20.0-2/6+3 = 20.0 - 0 + 3 = 23.0 (double)
(i) 10+17%3+4. = 10(int)+2(int)+4.0(double)=16.0 (double)
(j) 10+17/3.+4 = 10(int)+5.66667(double) + 4 (int)=19.66667 (double)
(Comment: 3. unlike 3 (no dot) is a floating point value.)
A program that checks these values and prints their size in bytes is here and its output is here.