Example: Calculate Determinant of a 2x2 Matrix in C

// Calculate Determinant of a 2x2 Matrix
#include <stdio.h>

int main() {
    // Step 1: Declare variables for matrix elements and the determinant
    float a, b, c, d;
    float determinant;

    // Step 2: Prompt user to enter the elements of the 2x2 matrix
    printf("Enter the elements of the 2x2 matrix:\n");
    printf("Enter element a (top-left): ");
    scanf("%f", &a);
    printf("Enter element b (top-right): ");
    scanf("%f", &b);
    printf("Enter element c (bottom-left): ");
    scanf("%f", &c);
    printf("Enter element d (bottom-right): ");
    scanf("%f", &d);

    // Step 3: Display the entered matrix for verification
    printf("\nYour 2x2 Matrix:\n");
    printf("| %.2f %.2f |\n", a, b);
    printf("| %.2f %.2f |\n", c, d);

    // Step 4: Calculate the determinant using the formula (ad - bc)
    determinant = (a * d) - (b * c);

    // Step 5: Print the calculated determinant
    printf("\nThe determinant of the matrix is: %.2f\n", determinant);

    return 0;
}