The trunc() function in C++ is used to round a given argument x towards 0 and return the nearest integer value that is not greater than x in magnitude.
double trunc(double x);
float trunc(float x);
long double trunc(long double x);
The trunc() function takes a single parameter value, x, that represents the value whose truncated value is to be computed.
The trunc() function returns the nearest integer value to x that is not greater than x.
#include <iostream>#include <cmath>using namespace std;int main(){// creating variablesdouble x = 15.6;double result;// implementing the trunc() functionresult = trunc(x);cout << "trunc(" << x << ") = " << result << endl;return 0;}
Lines 9-10: We create variables x and result.
Line 13: We implement the trunc() function on x and assign the value to the result variable.
Line 14: We print the result variable.