汇总矩形数组C＃中的行中的值

Question

I'm beginner want to get the Sum each row in 2D Array and print it to the Console and to get the Avg of each column and print it to the Console

I wrote my code to get number of rows and cols from the user and use it to create the Array and ask the user to fill each cell in the array

I stuck in sum up each row I don't get any problem in compiling the file I'm getting this error after finishing fill the numbers:

at System.Text.StringBuilder.AppendFormat(IFormatProvider provider, String format, Object[] args) at System.String.Format(IFormatProvider provider, String format, Object[] args) at System.IO.TextWriter.WriteLine(String format, Object arg0, Object arg1) at System.IO.TextWriter.SyncTextWriter.WriteLine(String format, Object arg0, Object arg1) at Program.SumRows(Int32[,] arr, Single rows, Int32 cols) at Program.Main()

this is the code:

using System;

struct Program
{
static void Main()
{
    Console.Clear();
    float rows = GetFloatFromUser("Please Enter Number Of Rows: ");
    int cols = GetIntFromUser("Please Enter Number Of Columns: ");
    int[,] recArr = CreatRecArray(rows,cols);
    SumRows(recArr , rows, cols);
    Console.ReadLine();
}

static int GetIntFromUser(string massage)
{
    int result;
    Console.WriteLine(massage);
    result = int.Parse(Console.ReadLine());
    return result;
}
static float GetFloatFromUser(string massage)
{   
    float result;
    Console.WriteLine(massage);
    result = float.Parse(Console.ReadLine());
    return result;
}
static int[,] CreatRecArray(float rows,int cols)
{
int[,] result= new int[(int)rows,cols];
    for (int  i = 0 ; i < rows ; i++)
    {
        for ( int j = 0 ; j < cols ; j++)
        {
            Console.WriteLine("Please Enter Matrix Element {0} , {1} : ",i+1,j+1);
            result[i,j]= int.Parse(Console.ReadLine());
        }
    }
return result;
}
static void SumRows(int[,] arr , float rows,int cols)
{
    for (int i = 1 ; i < rows+1 ; i++)
    {
        int result = 0;
        for ( int j = 0 ; j < cols ; j++)
        {
             result += arr[i,j];

        }
        Console.WriteLine("The Sum of row No {0] = {1}",i,result);
    }
}
}

Answer 1

Try this code:

class Program
{
    static void Main()
    {
        Console.Clear();
        float rows = GetFloatInput("Please Enter Number Of Rows: ");
        int cols = GetIntInput("Please Enter Number Of Columns: ");
        int[,] rectangleArray = CreateRectangleArray(rows, cols);
        SumRows(rectangleArray, rows, cols);
        Console.ReadLine();
    }


    static int[,] CreateRectangleArray(float rows, int cols)
    {
        int[,] result = new int[(int)rows, cols];
        for (int i = 0; i < rows; i++)
        {
            for (int j = 0; j < cols; j++)
            {
                Console.WriteLine();
                result[i, j] = GetIntInput($"Please Enter Matrix Element {i+1}, {j+1}");
            }
        }
        return result;
    }

    static void SumRows(int[,] arr, float rows, int cols)
    {
        for (int i = 0; i < rows; i++)
        {
            int result = 0;
            for (int j = 0; j < cols; j++)
            {
                result += arr[i, j];
            }
            Console.WriteLine("The Sum of row No {0} = {1}", i, result);
        }
    }

    private static float GetFloatInput(string message)
    {
        Console.WriteLine(message);
        float result = 0;
        while (!float.TryParse(Console.ReadLine(), out result))
        {
            Console.WriteLine("Failed to parse your input. Make sure it is numeric. Please try again:");
        }
        return result;
    }

    private static int GetIntInput(string message)
    {
        Console.WriteLine(message);
        int result = 0;
        while (!int.TryParse(Console.ReadLine(), out result))
        {
            Console.WriteLine("Failed to parse your input. Make sure it is an integer. Please try again:");
        }
        return result;
    }
}