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Generate random number how to use rand

#include <stdio.h> #include <stdlib.h> #include <time.h> int main () { /* initialize random generator */ srand ( time(NULL) ); /* generate random numbers */ printf("RAND_MAX = ", RAND_MAX); printf ("A number between 0 and RAND_MAX : %d\n", rand()); printf ("A number between 0 and 99: %d\n", rand() % 100); printf ("A number between 0 and 9: %d\n", rand() % 10); return 0; }