remainder() in C++

This function is also used to return the remainder(modulus) of 2 floating point numbers mentioned in its arguments.The quotient computed is rounded.

remainder = number – rquot * denom

Where rquot is the result of: numer/denom, rounded toward the nearest integral value (with halfway cases rounded toward the even number).

Syntax :

double remainder(double a, double b)
float remainder(float a, float b)
long double remainder(long double a, long double b)
Parameter:
a and b are the values
of numerator and denominator.

Return:
The remainder() function returns the floating
point remainder of numerator/denominator
rounded to nearest.

Error or Exception : It is mandatory to give both the arguments otherwise it will give error – no matching function for call to ‘remainder()’ like this.

# CODE 1

 // CPP program to demonstrate  // remainder() function #include #include    using namespace std;    int main() {     double a, b;     double answer;        a = 50.35;     b = -4.1;        // here quotient is -12.2805 and rounded to nearest value then     // rquot = -12.     // remainder = 50.35 – (-12 * -4.1)     answer = remainder(a, b);        cout << "Remainder of " << a << "/" << b << " is " << answer << endl;        a = 16.80;     b = 3.5;        // here quotient is 4.8 and rounded to nearest value then     // rquot = -5.     // remainder = 16.80 – (5 * 3.5)     answer = remainder(a, b);        cout << "Remainder of " << a << "/" << b << " is " << answer << endl;        a = 16.80;     b = 0;     answer = remainder(a, b);     cout << "Remainder of " << a << "/" << b << " is " << answer << endl;        return 0; }

OUTPUT :

Remainder of 50.35/-4.1 is 1.15
Remainder of 16.8/3.5 is -0.7
Remainder of 16.8/0 is -nan

# CODE 2

 // CPP program to demonstrate  // remainder() function #include #include    using namespace std;    int main() {     int a = 50;     double b = 41.35, answer;        answer = remainder(a, b);     cout << "Remainder of " << a << "/" << b << " = " << answer << endl;        return 0; }

OUTPUT :

Remainder of 50/41.35 = 8.65

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