44 lines
708 B
C++
44 lines
708 B
C++
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#include <iostream>
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using namespace std;
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//function starts
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bool isPowerOfTwo(const n)
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{
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//declare a variable to know if n is a power of 2 or not
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long i = 1;
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//at every iteration it will calcalute power of 2 starting from 1
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while (i < n)
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{
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i = i * 2;
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}
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//if n is the power of 2, i and n value will be same
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//if they are same, it will return true, else it will return false
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return i == n;
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}
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//main starts
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int main()
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{
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int n;
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cin >> n;
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cout << isPowerOfTwo(n);
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return 0;
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}
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/*
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Example 1:
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Input: n = 1
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Output:1 (true)
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Explanation: 20 = 1
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Example 2:
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Input: n = 16
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Output:1 (true)
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Explanation: 24 = 16
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Example 3:
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Input: n = 3
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Output: 0 (false)
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*/
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