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remainder() in C++

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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: number/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.

Time Complexity: O(1)

Space Complexity: O(1)
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




// CPP program to demonstrate
// remainder() function
#include <cmath>
#include <iostream>
 
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




// CPP program to demonstrate
// remainder() function
#include <cmath>
#include <iostream>
 
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 


Last Updated : 06 Feb, 2023
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