Find Smallest Number In Array Of Random Numbers

[Glaven]

I need to find the smallest number in my 10x8 array grid fileld with random numbers

I know im doing it wrong but I do not know what to do.

Please Help!

Heres my Code:

//ArrayGrid
#include <iostream>
using namespace std;

int main()
{
    int total,average,smallest;
    int row=0;
    int col=0;
    int ArrayGrid [10][8];
    srand(time(NULL));

//PrintArray

    for(row=1; row<10; row++)
    {          
        for(col=1; col<8; col++)
        {        
        {       
            ArrayGrid[row][col]= rand() % 70+1;
        }
            cout << ArrayGrid[row][col] << "\t";

        }     

        cout << ""<<endl<<endl;               
    }

//findSmallest

for ( row=0;row<0;row++ )
for ( col=0;col<0;col++ )

{
if ( smallest >= 1)
cout << "Smallest Number Is: "<< smallest <<endl<<endl;
}
{
if ( smallest >= 1)
cout << "Smallest Number Is: "<< smallest << endl << endl;
}


//findAverage
 for( row = 1;row <10;row++)
 for( col =1;col <8;col++)
    {
        total += ArrayGrid[row][col];
    }
average = total / 80; 

//Display Average
cout << "The Average Of The Random Numbers Is: ";
cout << average << endl<<endl;

system ("pause");
return 0;
}

[ddanbe]

Hi Maven, welcome to DaniWeb :)
Set your variable smallest to an arbitrarily large number, bigger than any number in your data set.
Test smallest with every element of your array in your two loops on line 31. If you find an element smaller than smallest set smallest equal to that element.

[gtcorwin]

Like Maven, I would just start with the highest number possible in your random array and start comparing at (0,0) and iterate through ithe array until you find a smaller number then keep going if the next smallest number is found then that becomes the smallest until you find a smaller or hit the end. With this method there is no need to start from (0,0) again with each discovery.

Good luck

[Brian_14]

This is what you might want to do...

int smallest = INT_MAX;
for (int i = 0; i < 10; i++) 
{
    for(int k = 0; k < 8; k++)
    {
        if (array[i][k] < smallest) 
        {
            array[i][k] = smallest;     
        }
    }
}

[necrovore]

Brian 14, perhaps u meant smallest=array[i][k]; instead of array[i][k] = smallest; ?

[Glaven]

ok , so i chaned my findsmallest function , but it still wont work.

//ArrayGrid
#include <iostream>
using namespace std;
int main()
{
    int total,average;
    int row=0;
    int col=0;
    int array [10][8];
    srand(time(NULL));

//PrintArray

    for(row=1; row<10; row++)
    {          
        for(col=1; col<8; col++)
        {        
        {       
            array[row][col]= rand() % 70+1;
        }
            cout << array[row][col] << "\t";
        }     
        cout << ""<<endl<<endl;               
    }

//findSmallest

int smallest = INT_MAX;

for (int i = 0; i > 10; i++) 
{
    for(int k = 0; k > 8; k++)
    {
        if (array[i][k] > smallest) 
        {
            array[i][k]=smallest; 
        }  
    } 
}

//Display Smallest

cout << "The Smallest Number Is: ";

cout << smallest << endl << endl;

//findAverage

 for ( row = 1;row <10;row++)
 {
     for( col = 1;col <8;col++)
    {
        total += array[row][col];
    }
average = total / 80; 
 }
//Display Average

cout << "The Average Of The Random Numbers Is: ";
cout << average << endl<<endl;

system ("pause");
return 0;
}

The output for the smallest number would be like"The Smallest number is: 2191752821"

[ddanbe]

Why don't you change the line 34 if (array[i][k] > smallest) into if (array[i][k] < smallest) and line 36 into smallest = array[i][k];?

[Glaven]

I did and its still the same output.. :(

[NathanOliver]

Post the code that you have now.

[Glaven]

never mind i fixed it thanks everyone for your help <3 !