matrix rotation

#include<stdio.h>
int main(){

    int mat1[3][3] = {1, 2, 3, 4, 5, 6, 7, 8, 9};
    int mat2[3][2];

    printf("Original matrix:\n");

    for(int i = 0; i<3; i++){
        for(int j=0; j<3; j++){
            printf("%d ", mat1[i][j]);
        }
        printf("\n");
    }

    printf("Rotated matrix:\n");

    mat2[0][0] = mat1[2][0];
    mat2[0][1] = mat1[1][0];
    mat2[0][2] = mat1[0][0];

    mat2[1][0] = mat1[2][1];
    mat2[1][1] = mat1[1][1];
    mat2[1][2] = mat1[0][1];

    mat2[2][0] = mat1[2][2];
    mat2[2][1] = mat1[1][2];
    mat2[2][2] = mat1[0][2];

    for(int a = 0; a<3; a++){
        for(int b=0; b<3; b++){
            printf("%d ", mat2[a][b]);
        }
        printf("\n");
    }

    return 0;
}