# Bash program to find A to the power B

Given two number A and B write a shell script to find the value of AB .

Examples:

```Input :
2 4
Output :
2 to the power 4 is 16

Input :
1 0
Output :
1 to the power 0 is 1
```

## Approach

A to the power B (AB) means multiplying A, B times. Using a naive approach to solve this problem.
For Example:-
A = 2 and B = 3
A3 = 8 which comes by multiplying 2 3 times i.e. 2*2*2 = 8 .

## BASH

 `# Bash Program to find ` `# A to the power B ` ` `  `# Subroutine to find A ` `# to the power B ` `pow() ` `{ ` `  ``# value of A ` `  ``a=\$1 ` ` `  `  ``# value of B ` `  ``b=\$2 ` ` `  `  ``# c to count counter ` `  ``c=1 ` ` `  `  ``# res to store the result ` `  ``res=1 ` ` `  `  ``# ` `  ``if``((b==0)); ` `  ``then` `    ``res=1 ` `  ``fi` ` `  `  ``if``((a==0)); ` `  ``then` `    ``res=0 ` `  ``fi` ` `  `  ``if``((a >= 1 && b >= 1)); ` `  ``then` `    ``while``((c <= b)) ` `    ``do` `      ``res=\$((res * a)) ` `      ``c=\$((c + 1)) ` `    ``done` `  ``fi` ` `  `  ``# Display the result ` `  ``echo` `"\$1 to the power \$2 is \$res"` `} ` ` `  `# Driver Code ` ` `  `# input ` `A=2 ` `B=4 ` ` `  `# calling the pow function ` `pow \$A \$B `

Output:

```16
```

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