redeclaration of "rawtime" with no linkage

This error message typically occurs when you try to declare a variable with the same name multiple times in the same scope without any external linkage. In C, each variable must have a unique name within its scope.

To resolve this issue, you should ensure that you only declare the variable "rawtime" once in the current scope. If you need to use the variable in different parts of your code, you can either declare it in separate scopes or use different names for each declaration.

Here's an example to illustrate this:

#include <time.h>

int main() {
    time_t rawtime; // Declare "rawtime" once

    // Rest of your code...

    {
        time_t rawtime; // Another declaration of "rawtime" in a different scope
        // Rest of your code...
    }

    return 0;
}

By separating the declarations into different scopes, you can avoid redeclaring the variable without linkage error.