随机产生浮点数问题！

[chentianqiao]

下面是随机产生１０个浮点数，那有问题啊，我晕，怎么不行

#include <stdio.h>
#include <conio.h>
#include <stdlib.h>
#include <time.h>
#define N 10

int main()
{
double a[N];
int i, j;

srand(time(NULL));

for (i = 0; i < 10; i++)
{
a[i] = ( (double)rand() / ( (double)RAND_MAX+1) ) * 100;
}

for (j = 0; j < 10; j++)
{
printf("%.2lf ", a[i]);
}

getch();
return 0;
}

[king_water]

printf("%.2lf ", a[i]);


a[ j ]

[chentianqiao]

我晕，这我都不知道，谢谢

[chenhu_doc]

#include <stdio.h>
#include <conio.h>
#include <stdlib.h>
#include <time.h>
#define N 10

int main()
{
double a[N];
int i, j;

srand((unsigned)time(NULL)); // notice the "unsigned" though it's no error or warning without it...

for (i = 0; i < 10; i++)
{
a[i] = ( (double)rand() / ( (double)RAND_MAX+1) ) * 100;
}

for (j = 0; j < 10; j++)
{
printf("%.2lf ", a[j]); // carelessness
}

getch();
return 0;
}