Giving instruction to an executing C code
I've tried to think of a solution, but I can't do it without some help. Lets say I have a c code that is executing and splitting out data using printf() statements constantly. Is there a way I can change a variable within the program on-the-fly? Or at least instruct it to fetch another constant from a file that I modify? Thanks!
for example, in the following code, I want to change the variable "variable_of_interest" while it is executing.
extern float variable_of_interest;
printf( "variable = %f\n", variable_of_interest);