你给出的 代码运行会出现这样的问题main.cpp: In function 'int main()': main.cpp:29:11: warning: suggest explicit braces to avoid ambiguous 'else' [-Wparentheses] if(n<1||n>100) ^ main.cpp:35:28: error: expected 'catch' before '{' token } else { ^ main.cpp:35:28: error: expected '(' before '{' token main.cpp:35:28: error: expected type-specifier before '{' token main.cpp:35:28: error: expected ')' before '{' token main.cpp:36:21: error: 'n' was not declared in this scope cout<<"n:"<<n<<endl;
时间: 2024-03-10 17:46:55 浏览: 322
main.cpp:(.text+0x1180): undefined reference to `cv::randn(cv::_InputOutputArray const&, cv::_InputA
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非常抱歉,我之前给出的代码存在语法错误。以下是修正后的代码:
```cpp
#include <iostream>
using namespace std;
class Exception {
public:
virtual void showMessage() = 0;
};
class OutOfMemory : public Exception {
public:
void showMessage() {
cout << "Out of Memory!" << endl;
}
};
class RangeError : public Exception {
public:
void showMessage() {
cout << "Range Error!" << endl;
}
};
int main() {
try {
int n;
cout << "Input n(1<=n<=100):";
cin >> n;
if (n < 1 || n > 100) {
if (n < 0) {
throw OutOfMemory();
} else {
throw RangeError();
}
} else {
cout << "n:" << n << endl;
}
} catch (Exception& e) {
e.showMessage();
}
return 0;
}
```
修正后的代码中,我增加了缺失的 `return 0;` 语句,并且将原来的 `if(n<1||n>100)` 修改为了 `if (n < 1 || n > 100) { ... } else { ... }` 的结构,以避免出现警告信息。同时,我也将 `catch` 语句的位置放到了 try 语句的后面,并且修正了一处变量声明错误。
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