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Visual Studio 2017 Issue

nickb24 (9)
Hello, after countless hours trying to figure out why my code is not working correctly i have decided to seek help. The code below, is not 100% finished, but i am just trying to make it out the menu, which it does, then i press 1 for the current array, and it gives me a 5x5 table that is continuous of one number and i can't seem to fix it.

here is a short video, showing the code, then i am proceeding to run it and it shows the random numbers that keep going on and on. Each time i run the code it is a different set of random numbers

https://www.screencast.com/t/mcumLQmxkL9B

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#include "stdafx.h"
#include "targetver.h"
#include <iostream>
#include <iomanip>

using namespace std;
const int ROWS = 5;
const int COLS = 5;


void displayMenu();
int getInput();                 
void displayArray(const int [][COLS], int);
void multiArray(int [][COLS], int);
void swapArray(int [][COLS], int);
void sum(int [][COLS], int);
void displayExit();              
void displayError();             



int main() {
	int myArray[ROWS][COLS] = {
		{1,2,3,4,5},
		{-20,-40,-60,-80,-100},
		{3,3,3,3,3},
		{5,7,9,11,13},
		{-15,-25,-35,-45,-55}
	};

	int choice = 0;

	do {                                  
		displayMenu();
		choice = getInput();
		switch (choice)
		{
		case 1:
			displayArray(myArray, ROWS);
			break;
		case 2:
			multiArray(myArray, ROWS);
			break;
		case 3:
			swapArray(myArray, ROWS);
			break;
		case 4:                                
			sum(myArray, ROWS);
			break;
		case 5:
			displayExit();
			break;
		default:
			displayError();
			break;
		}
	} while (choice != 5);
}

void displayMenu() {
	cout << "\t\tMain Menu" << endl << endl;
	cout << "1. Display array: " << endl;
	cout << "2. Multiply array by 3: " << endl;
	cout << "3. Swap row 2 and row 3: " << endl;
	cout << "4. Display sum of all elements: " << endl;
	cout << "5. Exit" << endl << endl;
}

int getInput() {                // added getInput function to gather the input from the user
	cout << "Input values 1 through 4, or 5 to exit program: ";
	int choice;

	if (!(cin >> choice)) {
		cin.clear();
		cin.ignore(numeric_limits<streamsize>::max(), '\n');
		choice = 0;
	}
	cout << endl;
	return choice;
}

void displayArray(const int myArray[][COLS], int rows) { 
	cout << "Current Array: " << endl;
	for (int i = 0; i < rows; i++) {
		for (int j = 0; j < COLS; j++) {
			cout << setw(5) << right << myArray[i][j] << " ";
		}
		cout << endl;
	}
	cout << endl;
}

void multiArray(int myArray[][COLS], int rows) {
	for (int i = 0; i < rows; i++) {
		for (int &val : myArray[row]) {
			val *= 3;
		}
	}
	cout << "Array multiplied by 3" << endl << endl;
}

void swapArray(int myArray[][COLS], int rows) {


}

void sum(int myArray[][COLS], int rows) { 
	int sum = 0;

	for (int i = 0; i < rows; i++) {
		for (int j = 0; j < COLS; j++) {
			sum += myArray[i][j];
		}
	}
	cout << "The sum of all values in the array is: " << sum << endl << endl;
}
void displayExit() {
	cout << "The Program will now end" << endl;
}
void displayError() {
	cout << "Sorry, that is not a valid choice." << endl;
}
Last edited on
jonnin (11441)
validate that get input is working.
Don't do anything else, just test that one function.
Display appears to work, and it worked for me when I did cin for choice instead of get input.
Last edited on
nickb24 (9)
Did you look at the screencast video? The menu pops up, i select displayArray and then it spits out random numbers on my command line.
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