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Follow every condition, branch, and iteration.

if / else

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Source codeC

condition.c editable

Ready to visualize

Try age = 15 to follow the else branch. Edit the code above, then press Play.

Supported C syntax

One int declaration followed by if, optional else if branches, and an optional else. Compare the variable with an integer using <, <=, >, >=, ==, or !=. Braced bodies support printf text and one %d with the variable. Nested conditions, logical operators, and full programs are not supported.

Execution flowREADY

01 · DECLAREint age = 20;

IFage >= 18pending

true →

BRANCH BODY

printf("Adult\n");

↓ false · check next branch

ELSEOtherwisepending

then →

BRANCH BODY

printf("Minor\n");

Continue after the conditional

Ready to execute

Step through the declaration, test the condition, and follow the selected branch.

VARIABLE WATCHLine —

ageint

—Not initialized

THE BRANCH RULE

Check in order.
Run the first match.
Skip the rest.

Console outputstdout 0 lines

Output will appear here when printf executes▌