CSCI 102 - Fall 2023 Fundamentals of Computation

Week 11 Lab

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Exercises

Complete the Lab 11 - Using Functions assignment on Vocareum. The goal of this exercise is to help prepare you for HW 11 and 12. In this assignment you are given several functions that process arrays. Your job is to complete main() to make calls to the provided functions and add a small amount of “glue” code to output the results, etc.

Spend the majority of your time on this exercise.

Other Exercise(s)

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

cpp/cs102/practice12/printSugar

Tracing Exercise

Assume the user types abcdef when prompted.

#include <iostream>
using namespace std;

void f1(char str[], int i, int j);

int main()
{
    // 6 locations + 1 for the null character 
    char input_str[7];

    cout << "Enter a 6 character string: " << endl;
    cin >> input_str;

    for(int i = 0; i < 6; i++){
        f1( input_str, i, (i+1)%6 )        
    }

    for(int i = 0; i < 6; i++)
    {
        cout << input_str[i];
    }
    cout << endl;
    return 0;
}

void f1(char str[], int i, int j)
{
    char temp;
    temp = str[j];
    str[j] = str[i] + 1;
    str[i] = temp;
    return;
}

Challenge exercise (2D arrays)

cpp/cs102/practice10/saleGrid

Solutions

Solution to the Vocareum coding exercise are available here. ONLY look at the solutions after the lab period and after struggling to figure it out on your own. By looking at the solutions before struggling with how to do it yourself, you lose a majority of its benefit.

Open-ended Help

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