Other functions, such as sqrt (square root), round (rounds a number) and log (natural logarithm), can be found in the <cmath> header file:
Example
// Include the cmath library
#include <cmath>
cout << sqrt(64);
cout << round(2.6);
cout << log(2);
#include <cmath>
cout << sqrt(64);
cout << round(2.6);
cout << log(2);
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