Comments can be a low-key forced line break:
int matrix[16] = { 0x0, 0x1, 0x2, 0x3, // 0x4, 0x5, 0x6, 0x7, // 0x8, 0x9, 0xA, 0xB, // 0xC, 0xD, 0xE, 0xF, // };
Comments can be a low-key forced line break: