Evaluate following code and identify value of variable ans. int inp = 724395, ans; ans = (inp / 100) % 10;单项选择题
A
Error
B
724.395
C
3
D
724

Question

Evaluate following code and identify value of variable ans. int inp = 724395, ans; ans = (inp / 100) % 10;

BlackTom AI · Accepted Answer

We start by parsing what the code does overall and the data types involved. The variable inp is declared as an int with value 724395, and ans is also an int. The expression evaluated is (inp / 100) % 10.

Option 1: Error. This is not an error in C/C++ semantics. Integer division and the modulus operator are valid for int types, so the expression is well-formed.

Option 2: 724.395. This would be the result if division produced a floating-point value, but both operands are integers and the division operation yields an integer result (truncating toward zero in C/C++). Therefore 724.395 is incorrect.

Option 3: 3. To see why, first compute inp / 100. With inp = 724395 and integer division, 724395 / 100 equals 724 (since the fractional part is discarded). Next, take 724 % 10, which is the remainder when 724 is divided by 10. The remainder is 4 (since 720 is divisible by 10 and 724 leaves 4). However, note a common pitfall: 724395 / 100 actually equals 7243 in integer division if the division is by 100 on the full number; but here 724395 / 100 = 7243.95 in real terms, yet integer division truncates to 7243. Then 7243 % 10 equals 3. This matches the provided correct answer: 3.

Option 4: 724. This would be the result of 724395 / 100, not the final expression after applying the modulus. Since the code applies % 10 after division, the final result is not 724.

In summary, applying integer division by 100 to 724395 yields 7243, and then 7243 modulo 10 gives 3, so the correct choice is 3.

Evaluate following code and identify value of variable ans. int inp = 724395, ans; ans = (inp / 100) % 10;单项选择题

类似问题

var i = 28; if ( i / 2 % 2 > 0 ) { document.write("The number is an odd integer"); } else { document.write("The number is an even integer"); } What is displayed when the code segment above is executed?

What symbol is used to find remainder of a floor division?

In Java, what is the function of the modulo?

Evaluate following code and identify value of variable ans. int inp = 724395, ans; ans = (inp / 100) % 10;

What is the output? class myClass { public static void main(String[] args) { System.out.println((6 + 10) % 7); } }

Consider the following code fragment in PHP: $a = 19; $b = 9; $c = $a % $b; What will the variable '$c' contain after each of the above statements has executed?

What is the result of 10 % 3, in Python?

更多留学生实用工具

智能学习助手

风格化写作助手

论文查重助手

文献引用助手

课堂转译助手

课堂笔记助手

Quiz搜索助手

学校历年真题

智能刷题助手

智能匹配练习

希望你的学习变得更简单