 # C++ Programming Code Examples

## C++ > Mathematics Code Examples

### Program to Generate Random Numbers Using Probability Distribution Function

``` Program to Generate Random Numbers Using Probability Distribution Function This is a C++ Program to generate random numbers using Probability Distribution Function. Probability distribution is based on probability density function. a probability density function (pdf), or density of a continuous random variable, is a function that describes the relative likelihood for this random variable to take on a given value. The probability of the random variable falling within a particular range of values is given by the integral of this variable's density over that range-that is, it is given by the area under the density function but above the horizontal axis and between the lowest and greatest values of the range. //pdf(x) = 1 if x>360 // = 0 if x<0 // = x/360 otherwise #include <iostream> #include <math.h> #include <stdlib.h> using namespace std; //This is a sample program to generate a random numbers based on probability desity function of spiner //pdf(x) = 1 if x>360 // = 0 if x<0 // = x/360 otherwise int N = 10; int main(int argc, char **argv) { int p = 0; for (int i = 0; i < N; i++) { p = rand() % 400; if (p > 360) cout << 0 << " "; else if (p < 0) cout << 0 << " "; else cout << p * 0.1 / 360 << " "; } cout << "..."; } ```