#include <iostream> int main() { int a, b; // 获取用户输入的两个正整数 std::cin >> a >> b; if (a % 2 != 0) { // 当a是奇数时 for (int i = a; i <= b; i += 2) { std::cout << i << std::endl; } } else { // 当a是偶数时 for (int i = a; i <= b; i += 2) { std::cout << i << std::endl; } } return 0; }c++(数之间用空格表示) 回答篇幅：简单明了
```cpp #include <iostream> int main() { int a, b; std::cin >> a >> b; bool first = true; for (int i = a; i <= b; i += 2) { if (!first) { std::cout << " "; } std::cout << i; first = false; } return 0; } ``` 修改后代码能从用户输入中取两个整数 `a` 和 `b`，按从 `a` 开始到 `b` 的顺序、以 2 为步长输出整数，数间用空格分隔。 [2026-01-31 21:11:38 | AI问答 | 150点数解答]
相关提问
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