Change a variable using debug mid running

Question

How do I make so while the code is running, it may for e.g. ask me in the debug to write a var "num" and it will change to what I typed in mid the code running?
Or for e.g. will ask something and I can choose either that will be "true" or "false"?
Thank you in advance

Answer 1

What language are we talking about?

I pretty much doubt that you want to change the value of a variable while debugging (GDB), rather you would like to take input from the user. Is that right?

In C, basic user input would look something like this.

#include <stdio.h>

int main()
{
    char name[50];
    printf("What's your first name? ");
    scanf("%s", name);
    printf("Hello, %s!", name);
    return 0;
}

Check printf() out for more details.