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# What is the remquo() function in C++? Onyejiaku Theophilus Chidalu

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### Overview

The remquo() function in C++ computes the floating point remainder of two arguments (x, y) passed to it. It also saves the quotient to the pointer (z) passed to it.

### Syntax

double remquo(double x, double y, int* q);
float remquo(float x, float y, int* q);
long double remquo(long double x, long double y, int* q);


### Parameter values

The remquo() function takes three parameter values:

• x: This represents the numerator.
• y: This represents the denominator.
• z: This represents the pointer to an object where the remainder is stored as an integer value type.

### Return value

The remquo() function returns a floating point remainder of the fraction x/y. When the denominator given is 0, the function returns NaN (i.e., Not a Number).

### Example

#include <iostream>#include <cmath>using namespace std;int main(){    int z;    double x = 12.5, y = 2.2;    double result = remquo(x, y, &z);    cout << "Remainder of " << x << "/" << y << " = " << result << endl;    cout << "Quotient of " << x << "/" << y << " = " << z << endl << endl;    x = -12.5;    result = remquo(x, y, &z);    cout << "Remainder of " << x << "/" << y << " = " << result << endl;    cout << "Quotient of " << x << "/" << y << " = " << z << endl << endl;    y = 0;    result = remquo(x, y, &z);    cout << "Remainder of " << x << "/" << y << " = " << result << endl;    cout << "Quotient of " << x << "/" << y << " = " << z << endl << endl;        return 0;}
Implementing the remquo() function

### Code explanation

• Line 8: We create an integer variable, z. It serves as the pointer parameter in our program.

• Line 9: We create two variables of double types x and y, which respectively represent the numerator and denominator arguments.

• Line 11: We use the remquo() function using x, y, and z as arguments. We also assign the output to another variable result.

• Line 12: We print the result variable.

• Line 13: We print the quotient z.

The logic in line 11, 12, and 13 is replicated in line 15 down to the last code.

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function
c++

CONTRIBUTOR Onyejiaku Theophilus Chidalu

Grokking Modern System Design Interview for Engineers & Managers

Ace your System Design Interview and take your career to the next level. Learn to handle the design of applications like Netflix, Quora, Facebook, Uber, and many more in a 45-min interview. Learn the RESHADED framework for architecting web-scale applications by determining requirements, constraints, and assumptions before diving into a step-by-step design process.

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