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randomNo.c
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randomNo.c
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#include <stdio.h>
#include <time.h>
#include <stdlib.h> // random functions
int main() {
//printf ("time(0) is %ld\n",time(0));// seconds from Jan. 01 1970 (epoch time)
srand(time(NULL));// time(0) is also ok
//
// //srand(2146793);// You need to use a seed value for mid-term test
//
float x=0.,x1,y1,r2;//1>x1,y1>0
int i,RandNo,n=20;
for(i = 1; i <= n; i++) {
//x = (float) rand();// between 0 and RAND_MAX (2147483647)
//printf("%d, value: %d\n", i,rand());
//printf("Number: %d, x = %f\n",i,x);
x = (float) rand() / RAND_MAX; //values between 0~1
//printf("Number: %d, x = %f\n",i,x);
//printf("Number: %d, x = %f\n",i,2.0*x - 1.);
// RandNo = (int) (x*n + 1);//pick a number randomly from 1~n
// printf("Number: %d, RandNo = %d\n",i,RandNo);
}
return 0;
}