why don't i get the out put for values of 'a' other than 1?-CodePudding

why isn't the loop starting again with different value of a other than 1.

package com.company;

import java.util.Scanner;

public class ForDemo {
    public static void main(String[] args) {

        Scanner sc = new Scanner(System.in);

        System.out.println();
        System.out.print("ENTER A NUMBER: ");
        int b = sc.nextInt();
        int a;
        
        for(a=1 ;a<11;a=a 1)
        for(b=b;b<16;b=b 1)
        System.out.println(b   " * "   a   " = "   b*a);
    }
}

output:

ENTER A NUMBER: 1

1 * 1 = 1

2 * 1 = 2

3 * 1 = 3

4 * 1 = 4

5 * 1 = 5

6 * 1 = 6

7 * 1 = 7

8 * 1 = 8

9 * 1 = 9

10 * 1 = 10

11 * 1 = 11

12 * 1 = 12

13 * 1 = 13

14 * 1 = 14 here it terminates!

required output:

1 * 1 = 1

2 * 1 = 2

3 * 1 = 3

4 * 1 = 4

5 * 1 = 5

6 * 1 = 6

7 * 1 = 7

8 * 1 = 8

9 * 1 = 9

10 * 1 = 10

11 * 1 = 11

12 * 1 = 12

13 * 1 = 13

14 * 1 = 14

15 * 1 = 15

1 * 2 = 2

2 * 2 = 4

3 * 2 = 6

4 * 2 = 8

5 * 2 = 10

6 * 2 = 12

7 * 2 = 14

8 * 2 = 16

9 * 2 = 18

10 * 2 = 20

11 * 2 = 22

12 * 2 = 24

13 * 2 = 26

14 * 2 = 28

15 * 2 = 30 and so on....

CodePudding user response：

You are doing this: b=b. So do this:

for(a=1 ;a<11;a=a 1)
        for(b=1;b<16;b=b 1) // change here!!
        System.out.println(b   " * "   a   " = "   b*a);

CodePudding user response：

Simply assign your input variable (x) at the starting of the inner loop as below will solve your problem.

Till now you were initialized b as the last value of the previous iteration that is why your inner loop is not executed after the first iteration.

public class Simple {
    public static void main(String[] args) {

        Scanner sc = new Scanner(System.in);

        System.out.println();
        System.out.print("ENTER A NUMBER: ");
        int x = sc.nextInt(); // take input as x

        for(int a=1 ;a<11;a  ) {
            for (int b = x; b < 16; b = b   1) { // initialize b with input variable(x)
                System.out.println(b   " * "   a   " = "   b * a);
            }
        }
    }
}