MAKE THE INVISIBLE VISIBLE
Code Tracing Studio
A step-by-step C interpreter for students learning how their code actually runs.
CHOOSE A STARTING POINT
Or replace any example with your own codeYour C code
.cYour code is interpreted locally, not compiled or executed. Editing clears the old trace, not your code.
Execution walkthrough
CURRENT LINE · 4
int sum = 0;
Declare a variable
Initialize sum to 0. 0 evaluates to 0.
VARIABLE WATCH
Changed this step| Variable | Scope | Value |
|---|---|---|
| sum | main #1 | 0 |
sum = 0
OUTPUT SO FAR
No output yet. Waiting for printf…Small steps. Clear logic. Confident coding.