[Solved] What will be the output of this C code?int main() { int a = 10; int b = 5; a = b; b = 20; printf("%d %d", a, b); return 0; } | C

C - Variables and Data Types

What will be the output of this C code?

int main() {
    int a = 10;
    int b = 5;
    a = b;
    b = 20;
    printf("%d %d", a, b);
    return 0;
}

A10 20

B10 5

C5 5

D5 20

Step-by-Step Solution

Solution:

Step 1: Trace variable assignments
Initially, a=10, b=5. Then a = b sets a to 5. Then b = 20 changes b to 20.
Step 2: Determine final values printed
Prints a and b: a is 5, b is 20.
Final Answer:
5 20 -> Option D
Quick Check:
Variable assignment traced correctly = 5 20 [OK]

Quick Trick: Assignment copies value; later changes don't affect previous variables [OK]

Common Mistakes:

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