Question

The following individual two programs are using while loop in order to print a specific output:

The outputs of the first program are:

10

9

8

5

4

The outputs of the second program are:

123456789

Using the Table 3.1 below, allocate the error(s) of each line of two programs and type of error:

The first program:

1. public Main
2. {
3. public static void main(String args[]){
4. int i=10
5. while(i>4){
6. System.out.print(i);
7. i++;
8. }
9. }
10. }

The second program:

11.   public class Main
12.   {
13.   public static void main(String args[]){
14.   int i=10;
15.   while(i<1){
16.   System.out.println(i);
17.   i--;
18.   }
19.   }
20.   }

Table 3.1

Line Number	Error	Type of error(logical error or Syntax error)
111	Miss word class	Syntax error
22	no	no
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20

Answer 1

Solution:

Program 1:

Line Number	Error	Type of Error
Line 1	Class word is Missing	Syntax Error
Line 2	No error	No error
Line 3	No error	No error
Line 4	Semi colon ; is Missing	Syntax Error
Line 5	Condition has to change since we need 4 also. i.e while (i>=4)	Logical error
Line 6	No error	No error
Line 7	i value should be decrement since output needed is 10 9 8 like that	Logical Error
Line 8	No error	No error
Line 9	No error	No error
Line 10	No error	No error

Program 2:

Line Number	Error	Type of Error
Line 1	No error	No Error
Line 2	No error	No error
Line 3	No error	No error
Line 4	i value should initialize to 1 because output needed is like 1 2 3 4 5 6 7 8 9	Logical Error
Line 5	Condition has to change I.e while (i < 10)	Logical error
Line 6	No error	No error
Line 7	i value should be increment	Logical Error
Line 8	No error	No error
Line 9	No error	No error
Line 10	No error	No error

Modified Program 1:

public class Main

{

public static void main(String args[]){

int i=10;

while(i>=4){

System.out.print(i);

i--;

}

}

}

Modified Program 2:

public class Main

{

public static void main(String args[]){

int i=1;

while(i<10){

System.out.println(i);

i++;

}

}

}

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