Example: Find Odd/Even Frequency in Matrix in C

// Find Odd/Even Frequency in Matrix
#include <stdio.h>

int main() {
    int rows, cols;

    // Step 1: Get matrix dimensions from the user
    printf("Enter the number of rows: ");
    scanf("%d", &rows);
    printf("Enter the number of columns: ");
    scanf("%d", &cols);

    int matrix[rows][cols]; // Declare matrix based on user input
    int oddCount = 0;
    int evenCount = 0;

    // Step 2: Get matrix elements from the user
    printf("Enter elements of the matrix:\n");
    for (int i = 0; i < rows; i++) {
        for (int j = 0; j < cols; j++) {
            printf("Enter element at matrix[%d][%d]: ", i, j);
            scanf("%d", &matrix[i][j]);
        }
    }

    // Step 3: Iterate through the matrix and count odd/even numbers
    for (int i = 0; i < rows; i++) {
        for (int j = 0; j < cols; j++) {
            if (matrix[i][j] % 2 == 0) {
                evenCount++; // Increment even counter if remainder is 0
            } else {
                oddCount++;  // Increment odd counter otherwise
            }
        }
    }

    // Step 4: Display the results
    printf("\nMatrix entered:\n");
    for (int i = 0; i < rows; i++) {
        for (int j = 0; j < cols; j++) {
            printf("%4d", matrix[i][j]);
        }
        printf("\n");
    }

    printf("\nFrequency of Even Numbers: %d\n", evenCount);
    printf("Frequency of Odd Numbers: %d\n", oddCount);

    return 0;
}