String Exercise 1: Learn and Practice

The code in this exercise is the starting point for the next exercise, so learn it well.

Use file name ex3_stringA.cpp copy the following code into your Visual Studio or other IDEs: #include <iostream> #include <string> using namespace std; int main() { string oldSentence; oldSentence = "The quick brown dog jumped WAY over the lazy cat."; // ADD CODE HERE: display the content of oldSentence // ADD CODE HERE: display the length of oldSentence ////////////////////////////////////////////////// // Do not make any change to the following code. // Just read and understand this program. ////////////////////////////////////////////////// // To create a new sentence without "WAY ": // 1) Create a string with "WAY " in it - our *s*earch string string s = "WAY "; // 2) find the position of "WAY " using the search string with oldSentence int pos = oldSentence.find(s); cout << "pos is " << pos << endl; // 3) get the characters up to "WAY " string newSentence = oldSentence.substr(0, pos); cout << "Modified sentence: " << newSentence << endl; // 4) append the characters after "WAY " // Adding the length of s to pos gives a position // just after where s appears in oldSentence... // Leave the second argument of substr() out to get the rest of the line. newSentence += oldSentence.substr(pos + s.length()); // 3) & 4) ALTERNATE: you can do both substrings in one step // newSentence = oldSentence.substr(0, pos) + oldSentence.substr(pos + s.length()); cout << "Completed sentence: " << newSentence << endl; return 0; }

The purpose of the program is to learn and practice the .length(), .find() and .substr() string functions by:

• Reading the code carefully
• Adding 2 lines of code as indicated in the comments.
• Compiling and running this C++ program to observe the results

When you are done:

• Take a screenshot of your IDE and console window after running the program.
• For this exercise, you will have: ex3_stringA.cpp.
• Complete all the exercises in this lab and upload the .cpp files and the screen captures for the output.