Murmur - increment the data pointer (to point to the next cell to the right).
Grumble - decrement the data pointer (to point to the next cell to the left).
A as in 'pizza' - increment (increase by one) the byte at the data pointer.
U as in 'puddle' - decrement (decrease by one) the byte at the data pointer.
scream at the top of your lungs - output the byte at the data pointer.
1 second of silence - accept one byte of input, storing its value in the byte at the data pointer.
E as in 'erm... erm... erm...' - if the byte at the data pointer is zero, then instead of moving the instruction point…