Question

В квадратной матрице найти сумму нечётных элементов

Answer 1

Program pr;
uses crt;

Var mas:array[1..1000, 1..1000] of integer;
N,i,j,sum:integer;

Begin
Writeln('Введите размер матрицы N*N');
Write('N = ');readln(N);
if (N>1000) or (N<1)  then  
Writeln('Ошибка, указанные значения выходят за пределы матрицы')   else   
 Begin      
   Writeln('Введите элементы матрицы');      
   sum:=0;   
   for i:=1 to N do     
     for j:=1 to N do     
         Begin     
           readln(mas[i,j]);       
           if (mas[i,j] mod 2 <> 0)
                then sum:=sum+mas[i,j];     
          end;      

     Writeln();   
     Writeln('Исходная матрица');   
     for i:=1 to N do   
        Begin     
            for j:=1 to N do     
               Begin     
                  Write(mas[i,j], ' ');     
               end;     
             Writeln();   
         end;         

     Writeln();   
     Writeln('Сумма нечетных элементов = ',sum);      

  end;

readln;
end.

Answer 2

Finding the Sum of Odd Elements in a Square Matrix

To find the sum of odd elements in a square matrix, you can iterate through each element of the matrix and check if it's an odd number. If it is, add it to the running sum. Here's a step-by-step guide on how to achieve this:

1. Iterate Through the Matrix: - Start by iterating through each element of the square matrix.

2. Check for Odd Numbers: - For each element, check if it's an odd number.

3. Calculate the Sum: - If the element is odd, add it to the running sum.

4. Return the Sum: - Once all elements have been checked, the running sum will represent the sum of all odd elements in the matrix.

Let's apply this process to the given square matrix:

|30||55||95||105|
|40||80||100||120|
|15||20||70||85|
|20||35||80||95|

Calculating the Sum of Odd Elements

Based on the provided square matrix, the sum of the odd elements can be calculated as follows:

- Odd elements in the matrix: 55, 95, 15, 85, 35, 95 - Sum of the odd elements: 55 + 95 + 15 + 85 + 35 + 95 = 380

Therefore, the sum of the odd elements in the given square matrix is 380.