Standard C provides two functions for the purpose of random number generation–rand and srand. The function rand generates a sequence of pseudo-random numbers. The term pseudo-random implies that the generated sequence is not really random: no matter how many times you execute the program, the same sequence of numbers will be generated. To create a truly unique sequence of numbers every time the program executes, you should use the function srand:
#include //rand and srand declarations#include //printf declaration#include //time declarationusing namespace std;void main() { srand ( time(NULL) ); //set starting-point for a random sequence of numbers for (int j =0; j < 10; j++) printf ("%d
", rand() );} 
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