高階ICT-DATA-015
An 8-bit unsigned integer stores whole numbers from 0 to 255. Which sum cannot be stored in that format?
A. 200 + 50
B. 100 + 100
C. 15 + 1
D. 250 + 10✓ 答案
解說
250 + 10 = 260, which is above 255, so it overflows an 8-bit unsigned integer. The other three sums are 250, 200 and 16, all inside the range.