Result.md

RUN 1:

Enter a main string

Test

Enter a pattern string

Te

Enter a replace string

Re

The resultant string is

Rest

RUN 2:

Enter a main string

This is Data Structure lab

Enter a pattern string

Data Structure

Enter a replace string

Data structure with C

The resultant string is This is Data structure with C lab

RUN 3:

Enter a main string

This is Data Structure lab

Enter a pattern string

Date

Enter a replace string

DATA

Pattern string NOT found