CSCI 102 – Lab 13

Week 13 Lab

Q&A on Material

Strings: character arrays (cstrings) vs. the standard string
Substring function (first example of function overloading)
Lexicographical comparison using string
String size function

Homework Questions or help

If you have general questions about HW11 and approaches to solving it please discuss as a group. If you have more specific questions, please wait for individual Q&A at the end of the session.

Exercises

Walk through these exercises and complete them as a group (if time allows):

cpp/cs102/practice12/letterReplace

cpp/cs102/practice13/stringTF

cpp/cs102/practice9/forCapitalization

cpp/cs102/practice13/secretAgent

Tracing Exercise

Try this tracing exercise at home when you study.

#include <iostream>
#include <string>
using namespace std;
bool isVowel(char input);
bool isConsonant(int input);
bool isNumeral(int input);
int main()
{
    string str1 = "2019 is finally the year of the Clippers";
    string str2 = "";

    for (int i = 0; i < str1.size(); i++)
    {
        if( isVowel( tolower(str1[i])) )
        {
            str2 = str2 + "_";
        } else if ( isConsonant( (int) tolower(str1[i])) )
        {
            str2 = str2 + str1[i];
        } else if ( isNumeral((int) str1[i]) )
        {
            str2 = str2 + "#";
        } else
        {
            str2 = str2 + " ";
        }

    }
    cout << str2 << endl;
    return 0;
}
bool isVowel(char input)
{
    return (input == 'a') || (input == 'e') || (input == 'i') || (input == 'o') || (input == 'u');
}
bool isConsonant(int input)
{
    return (input > 97) && ( input < 123) && ( input != 101) && ( input != 105) && ( input != 111) && (input != 117);
}
bool isNumeral(int input)
{
    return (input >= 48 ) && (input <= 57);
}

Open-ended Help

Any students with questions may stay after to get help. Anyone else may leave at this stage.