Multiplication formulas for shell scripts

Writing multiplication formulas with a for loop

New script File for.sh

[[email protected] shell] #vim for.sh

#!/bin/bash

For ((i=1;i<=9;i++))

Do

For ((j=1;j<=i;j++))

Do

Let "Sum=i*j"

Echo-n "$j * $i = $sum"

Done

Echo

Done

Execute script

[[email protected] shell] #sh for.sh

1*1=1

1*2=2 2*2=4

1*3=3 2*3=6 3*3=9

1*4=4 2*4=8 3*4=12 4*4=16

1*5=5 2*5=10 3*5=15 4*5=20 5*5=25

1*6=6 2*6=12 3*6=18 4*6=24 5*6=30 6*6=36

1*7=7 2*7=14 3*7=21 4*7=28 5*7=35 6*7=42 7*7=49

1*8=8 2*8=16 3*8=24 4*8=32 5*8=40 6*8=48 7*8=56 8*8=64

1*9=9 2*9=18 3*9=27 4*9=36 5*9=45 6*9=54 7*9=63 8*9=72 9*9=81

While loop writing

#!/bin/bash

I=1

J=1

while ((i<=9))

Do

while ((j<=i))

Do

Let "Sum=i*j"

Echo-n "$i * $j = $sum"

Let J + +

Done

Let i++

Let J=1

Echo

Done

The result of executing the script

1*1=1

2*1=2 2*2=4

3*1=3 3*2=6 3*3=9

4*1=4 4*2=8 4*3=12 4*4=16

5*1=5 5*2=10 5*3=15 5*4=20 5*5=25

6*1=6 6*2=12 6*3=18 6*4=24 6*5=30 6*6=36

7*1=7 7*2=14 7*3=21 7*4=28 7*5=35 7*6=42 7*7=49

8*1=8 8*2=16 8*3=24 8*4=32 8*5=40 8*6=48 8*7=56 8*8=64

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

This article is from the "12619984" blog, please be sure to keep this source http://12629984.blog.51cto.com/12619984/1911673

Multiplication formulas for shell scripts