How we can use nested while loop in c++ code

It is very easy to use nested while loop in c++. First we use the first while loop and then use second while loop within the first loop. You can easily understand the use of nested while loop by watching the code below.

Code:

#include <iostream>

#include <string>

using namespace std;

int main() {

                int i;

                i=1;

    while(i<=10)

    {

                int j,ans;

                j=1;

                while(j<=10)

                {

                                ans=i*j;

                                cout<<i<<"*"<<j<<"="<<ans<<endl;

                                j++;

                                }

                                i++;

                                cout<<endl;

                }

}

Output:

1*1=1

1*2=2

1*3=3

1*4=4

1*5=5

1*6=6

1*7=7

1*8=8

1*9=9

1*10=10

2*1=2

2*2=4

2*3=6

2*4=8

2*5=10

2*6=12

2*7=14

2*8=16

2*9=18

2*10=20

3*1=3

3*2=6

3*3=9

3*4=12

3*5=15

3*6=18

3*7=21

3*8=24

3*9=27

3*10=30

4*1=4

4*2=8

4*3=12

4*4=16

4*5=20

4*6=24

4*7=28

4*8=32

4*9=36

4*10=40

5*1=5

5*2=10

5*3=15

5*4=20

5*5=25

5*6=30

5*7=35

5*8=40

5*9=45

5*10=50

6*1=6

6*2=12

6*3=18

6*4=24

6*5=30

6*6=36

6*7=42

6*8=48

6*9=54

6*10=60

7*1=7

7*2=14

7*3=21

7*4=28

7*5=35

7*6=42

7*7=49

7*8=56

7*9=63

7*10=70

8*1=8

8*2=16

8*3=24

8*4=32

8*5=40

8*6=48

8*7=56

8*8=64

8*9=72

8*10=80

9*1=9

9*2=18

9*3=27

9*4=36

9*5=45

9*6=54

9*7=63

9*8=72

9*9=81

9*10=90

10*1=10

10*2=20

10*3=30

10*4=40

10*5=50

10*6=60

10*7=70

10*8=80

10*9=90

10*10=100

Hope you Understand the use of nested while loop in c++.

Click here for watching the video of that code