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C++ How To Find the Square Root of a Number

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Find the Square Root of a Number

Use the sqrt() function from the <cmath> library to find the square root of a number:

Example

double number = 64;
cout << sqrt(number);

Try it Yourself »

Explanation:
sqrt() returns the number that gives number when it is multiplied by itself. 8 * 8 is 64.

Related Pages

C++ Math Tutorial

C++ <cmath> Reference

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