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GATE CSE 2026 | Set 2 | C Programming | Memory Based | Question 21

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$\text { What will be the maximum value returned by function fun? }$

int fun(start, end) {
    len = end - start + 1;
    
    if (len < 1 || end < 0 || start < 0)
        return 0;
        
    if (len % 3 == 0)
        return fun(start + 1, end);
        
    else if (len % 3 == 1)
        return 1 + fun(start, end - 1);
        
    else
        return fun(start + 2, end);
}

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