What is the output of this C code?

medium📝 Predict Output Q4 of 15

C - Operators and Expressions

int a = 2;
printf("%d %d", a++, ++a);

A2 3

B3 3

C2 4

D3 4

Step-by-Step Solution

Solution:

Step 1: Evaluate post-increment and pre-increment order
In printf("%d %d", a++, ++a);, a++ uses 2 then increments to 3; ++a increments 3 to 4 then uses 4.
Step 2: Determine printed values
First %d prints 2 (original a), second %d prints 4 (after pre-increment).
Final Answer:
2 4 -> Option C
Quick Check:
Post-increment uses old value, pre-increment uses new value [OK]

Quick Trick: Post-increment uses old value; pre-increment uses new value [OK]

Common Mistakes:

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