[SOLVED] /*

/*
* Filename: main.c
* Description: Main driver for matrix manipulating functions
* Date: Feb. 2020
* Name:
*/

#include // printf()

#define N 4

void copy(void *, void *, int);
// void transpose(void *, int );
// void reverseColumns(void *, int n);
void printMatrixByRow(void *, int);

char A[N][N] = { 1,-2,3,-4,
-5, 6, -7, 8,
-1, 2, -3, 4,
5,-6,7,-8};

char C[N][N];

void main() {
int i, j;

printf(Copy:
);
copy(A, C, N);
printMatrixByRow(A, N);//
printMatrixByRow(C, N);

printf(Rotating the matrix by 90 degrees clockwise:
);
//transpose(C, N);
//reverseColumns(C, N);
printMatrixByRow(C, N);

return;
}

void printMatrixByRow(void *D, int n) {
int i, j;
char val;
for (i = 0; i < n; i++) {val = *((char*)(D + i*n + j));printf(“%4d %4d %4d %4d”, *((char*)(D + i*n + 0)), *((char*)(D + i*n + 1)), *((char*)(D + i*n + 2)), *((char*)(D + i*n + 3)));printf(”
“);}printf(”
“);}