The error message is indicating that the function `isdigit` is not recognized in the scope of your `evaluateexpression` function. This is likely because the appropriate library where `isdigit` is declared has not been included in your program. The `isdigit` function is declared in the `cctype` library. To use it, you need to include this library at the beginning of your program. Here is how you can do it: ```cpp #include ``` After adding this line at the top of your program, the compiler should be able to recognize the `isdigit` function.

Question

The error message is indicating that the function `isdigit` is not recognized in the scope of your `evaluateexpression` function. This is likely because the appropriate library where `isdigit` is declared has not been included in your program.

The `isdigit` function is declared in the `cctype` library. To use it, you need to include this library at the beginning of your program. Here is how you can do it:

```cpp
#include <cctype>
```

After adding this line at the top of your program, the compiler should be able to recognize the `isdigit` function.

Knowee AI · Accepted Answer

The error message is indicating that the function `isdigit` is not recognized in the scope of your `evaluateexpression` function. This is likely because the appropriate library where `isdigit` is declared has not been included in your program.

The `isdigit` function is declared in the `cctype` library. To use it, you need to include this library at the beginning of your program. Here is how you can do it:

```cpp
#include <cctype>
```

After adding this line at the top of your program, the compiler should be able to recognize the `isdigit` function.

/home/ubuntu/Main.cpp: In function ‘int evaluateexpression(char*)’:/home/ubuntu/Main.cpp:29:12: error: ‘isdigit’ was not declared in this scope 29 | if(isdigit(token[0])){ | ^~~~~~~

Question

Solution

Similar Questions

Upgrade your grade with Knowee