[C/C++] Đếm số phần tử dương trên biên ma trận số thực

Yêu cầu:
Đếm số phần tử dương trên biên ma trận số thực

Thuật toán:
1. Viết hàm nhập vào ma trận số thực
2. Viết hàm đếm số phần tử dương trên biên ma trận số thực

Code:

/****Count positive elements at boundary of matrix**********
*Author: vncoding
*Date : 31/03/2019
************************************************************/

#include <stdio.h>
#include <conio.h>
#include <stdlib.h>
#define N 100
#define M 100

void ImportData(float[][M], int, int, char*);
void PrintMatrix(float[][M], int, int);
int CntEAtBoundInMatrix(float[][M], int, int);


void main()
{
    int nRow, nCol;
    float average;
    float A[N][M];

    printf("\nNumber of row: ");
    scanf("%d", &nRow);
    printf("\nNumber of column: ");
    scanf("%d", &nCol);

    ImportData(A, nRow, nCol, "A");
    PrintMatrix(A, nRow, nCol);

    printf("\nThe number of positive elements at boundary of matrix: %d", 
                 CntEAtBoundInMatrix(A, nRow, nCol));

    getch();
}

/*************************************************************
* Function      : CntEAtBoundInMatrix()
* Parameter     : A[][M]: input matrix (I)
                  nRow  : row number   (I)
                  nCol  : column number(I)
* Return        : float
* Description   : Count positive elements at boundary of matrix
*************************************************************/
int CntEAtBoundInMatrix(float A[][M], int nRow, int nCol)
{
    int iRow, iCol;
    int cnt = 0;

    for (iRow = 0; iRow < nRow; iRow++)
    {
        for (iCol = 0; iCol < nCol; iCol++)
        {
            if (A[iRow][iCol] > 0 && 
                (iRow == 0 || iCol == 0 || iRow == nRow - 1 || iCol == nCol - 1))
            {
                cnt++;
            }
        }
    }

    return cnt;
}

/*************************************************************
* Function      : ImportData()
* Parameter     : A[][M]: input matrix (I)
nRow  : row number   (I)
nCol  : column number(I)
nameMatrix: matrix name (I)
* Return        : void
* Description   : Import matrix data
*************************************************************/
void ImportData(float Matrix[][M], int nRow, int nCol, char* nameMatrix)
{
    int iRow, iCol;
    for (iRow = 0; iRow < nRow; iRow++)
        for (iCol = 0; iCol < nCol; iCol++)
        {
            printf("\n%s[%d][%d] = ", nameMatrix, iRow, iCol);
            scanf("%f", &Matrix[iRow][iCol]);
        }
}

/*************************************************************
* Function      : PrintMatrix()
* Parameter     : Matrix: input matrix (I)
nRow  : row number   (I)
nCol  : column number(I)
* Return        : void
* Description   : Display matrix data
*************************************************************/
void PrintMatrix(float Matrix[][M], int nRow, int nCol)
{
    int iRow, iCol;
    printf("\nA = ");
    for (iRow = 0; iRow < nRow; iRow++)
    {
        printf("\n");
        for (iCol = 0; iCol < nCol; iCol++)
        {
            printf("\t%.2f\t", Matrix[iRow][iCol]);
        }
    }
}

Kết quả:

Number of row: 3
Number of column: 4

A[0][0] = -2
A[0][1] = 3
A[0][2] = 4
A[0][3] = -5
A[1][0] = 1
A[1][1] = -2
A[1][2] = 3
A[1][3] = -6
A[2][0] = 9
A[2][1] = 3
A[2][2] = -5
A[2][3] = 3

A =
        -2.00           3.00            4.00            -5.00
        1.00            -2.00           3.00            -6.00
        9.00            3.00            -5.00           3.00

The number of positive elements at boundary of matrix: 6

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