Determinant of 3x3 Matrix Dry Run in C

Determinant of 3x3 Matrix is an interactive C dry run visualizer from the Two D programs section. Study the source code, then use the execution controls to follow each step, variable update, highlighted line, and console output.

This page provides a browser-based dry run with source-code highlighting, auto-scroll, voice narration controls, and execution output for learning the program step by step.

Determinant of 3x3 Matrix Program Code

#include <stdio.h>
int main() {
    int matrix[3][3] = {{1, 2, 3}, {4, 5, 6}, {7, 8, 9}};
    int det;
    
    // Formula: a(ei - fh) - b(di - fg) + c(dh - eg)
    det = matrix[0][0] * (matrix[1][1]*matrix[2][2] - matrix[1][2]*matrix[2][1])
        - matrix[0][1] * (matrix[1][0]*matrix[2][2] - matrix[1][2]*matrix[2][0])
        + matrix[0][2] * (matrix[1][0]*matrix[2][1] - matrix[1][1]*matrix[2][0]);
    
    printf("Determinant = %d\n", det);
    return 0;
}

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