Question

Evaluate the following expression where prefix and postfix increment and decrement operator is used.

int rd=206, tf=20, yg=3, km=0;

km = rd % tf++ + tf % ++yg ;

System.out.println ("RD=" +rd+ "TF=" +tf+ “YG=" +yg+ "KM=" +km);

Answer 1

First term (rd % tf++):

tf++ (Postfix): Uses the current value of tf (20) for the modulo calculation, then increments tf to 21.

206 % 20 = 6 (remainder of 206 divided by 20).

Second term (tf % ++yg):

++yg (Prefix): Increments yg first (from 3 to 4), then uses it.

Uses the updated value of tf (21). So, 21 % 4 = 1 (remainder of 21 divided by 4).

• km = 6 + 1 = 7
• rd = 206
• tf = 21
• yg = 4