init two dimensional array

//-std=c99 -Wall -Wextra -Wpedantic -Wshadow

#include <stdio.h>
#include <stdlib.h>

char arr1[4][3];
char arr2[4][3] ={{'f','g','h'},{'k','l','m'},{'u','v','w'},{'x','y','z'}};
char arr3[4][3] ={[0][0]='a',[0][1]='b'};

int main()
{

    printf("%x\n", arr1[0][0]);

    printf("%c\n", arr2[0][0]);
    printf("%c\n", arr2[0][1]);
    printf("%c\n", arr2[1][0]);
    printf("%c\n", arr2[1][1]);

    printf("%c\n", arr3[0][0]);
    printf("%c\n", arr3[0][1]);

    return 0;
}

/*
output:

0
f
g
k
l
a
b

*/