C++Add a search command that asks the user for a string and finds the first line that contains that string. The search starts at the first line currently displayed and stops at the end of the file. If the string is found, the line that contains it is displayed at the top. In case the user enters a string X that does not occur in the file, the program should print the error message:ERROR: string "X" was not found. Attached is the first lines of the .txt file After a few computer science courses, students may start toget the feeling that programs can always be written tosolve any computational problem. Writing the program maybe hard work. For example, it may involve learning adifficult technique. And many hours of debugging. Butwith enough time and effort, the program can be written.So it may come as a surprise that this is not the case:there are computational problems for which no programexists. And these are not ill-defined problems (Can acomputer fall in love?) or uninteresting toy problems.These are precisely defined problems with importantpractical applications.

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Computer Networking: A Top-Down Approach (7th Edition)

7th Edition

ISBN:9780133594140

Author:James Kurose, Keith Ross

Publisher:James Kurose, Keith Ross

Chapter1: Computer Networks And The Internet

Section: Chapter Questions

Problem R1RQ: What is the difference between a host and an end system? List several different types of end...

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C++

Add a search command that asks the user for a string and finds the first line that contains that string. The search starts at the first line currently displayed and stops at the end of the file. If the string is found, the line that contains it is displayed at the top. In case the user enters a string X that does not occur in the file, the program should print the error message:

ERROR: string "X" was not found.

Attached is the first lines of the .txt file