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(C++) operator%

Operator to obtain the remainder from an integer division.

The following line of code calls operator+ to add the values of two integers.

const int three = 7 % 4; //3 is the remainder of 7 divided by 4

operator% can be often found in prime determination (in the tool PrimeExpert for example).

The code below shows how to determine if a value is odd or even.

if (x%2==0)

{

//x must be even

}

else

{

//x must be odd

}

The STL functor encapsulating operator% is called std::modulus.

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