Lab 0: Clarification & Guide Needed

[needOfHelpCMath]

View attachment 6372

Here is the attachment for my lab and just need some clarification and guide if I am going in the right direction?

// Januaray 24 2017
// Lab 0

#include <iostream>
#include <string>
#include <cmath>

using namespace std;

const int COLUMS = 5;
int a;

void findMin(int a[], int size) 
{
	int min = a[0]; // temp variable...array don't use dot 
	
	for (int i = 0; i < size; ++i) 
	{
	
		if (min > a[i]) 
		
		{
			min = a[i];
		}
		
	}

	return min;
}

void calulate(string exp) 
{
	// check for a plus
		// if found add the two numbers
	// check for minus
		// if found, subtract the two numbers
	// check for a times
		// if found, multiply the two numbers
	// check for divide
		// if found, divide the to numbers
	// if nothing is found
		// return
return;     
}

double computeAvg(int a[][COLUMS], int row, int column) 
{
	double sum = 0;
		
     for (int i = 0; i < row; ++i)
     {
     	for (int j = 0; j < column; ++j)
     	{
     		sum += a[i][j];
		}
	 }
     
return sum / (row * column);
}

void sqaureByValue(int squareNum)
{
     cout << pow(sqaureNum) << endl;
     
return;
}

void squareByReference(int& squareRef)
{
	cout << sqaureRef << endl;
	
return;
}

void menu(int numNeg) 
{
	int i = 0;
	
	for (i = 0; i >= numNeg; --i)
	{
		cout << numNeg;
	}
}
int main()
{
    
    int a = 0;
    
   while ( a != -1) {
         cin >> a;
       
   
   switch (a) {
          
          case 1:
               findMin(int a[], int size);
          break;
               
          case 2:
               calulate(string exp);
          break;
                        
          case 3:
               calulate(a[], size);
          break;
                
          case 4:
               computeAvg(a[], row, column);
          break;
               
          case 5:
               squareByValue
          break;
               
          case 6:
               squareByReference
          break;
                }  
}

}

 

[Future Bruno]

Yes, you are going in the right direction. Your code is mostly correct. However, there are a few things that need to be fixed. First, you have declared a variable called 'a', but you have not assigned it a value. You also need to assign a value to the constant 'COLUMNS'. Secondly, in the 'findMin()' function, you should return the minimum value, rather than just printing it out. Thirdly, in the 'calculate()' function, you need to actually do the calculations and return the result. Fourthly, in the 'computeAvg()' function, you need to divide the sum by the total number of elements in the array, rather than just the number of rows and columns. Finally, in the 'sqaureByValue()' and 'squareByReference()' functions, you need to actually pass in the argument and perform the calculation to find the square.You should also add a 'menu()' function, which will allow the user to choose the option they want to use. I hope this helps. Good luck!