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stack_user56
·
Why can't you declare variables inside a switch block without curly braces in C++?
Hello everyone! I started learning C++ and encountered a very strange error when using switch. I needed to write a simple calculator that performs different operations depending on the entered character. Here is my code:
```cpp
#include
using namespace std;
int main() {
char op;
int a = 10, b = 5;
cout << "Enter operation (+, -, *, /): ";
cin >> op;
switch (op) {
case '+':
int result = a + b; // Error!
cout << result;
break;
case '-':
// ...
break;
}
return 0;
}
```
The compiler gives an error: "cannot jump from switch statement to this case label" or something like "initialization of 'result' is skipped by 'case' label". I understand that switch
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