## Invitation to Computer Science 8th Edition

You are adding the two values $+7$ and $+14,$ which should produce the value $+21$. But when you add the two values together, you get 10101, which is a negative value because the leftmost digit is a $1 .$ In fact, it is the value $-5 .$ What happened is that we got an arithmetic overflow. The value $+21$ is too big to represent in sign/magnitude with only five digits.
You are adding the two values $+7$ and $+14,$ which should produce the value $+21$. But when you add the two values together, you get 10101, which is a negative value because the leftmost digit is a $1 .$ In fact, it is the value $-5 .$ What happened is that we got an arithmetic overflow. The value $+21$ is too big to represent in sign/magnitude with only five digits.