如题所述
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
double d_rand(int m,int n)
{
int ts,d;
double d1;
if(m==n)
return m*1.0;
if(m>n)
{
ts=m;m=n;n=ts;
}
d1=(rand()%1000*1000+rand()%1001)*1.0/1000000;
d=rand()%(n-m)+m;
return d*1.0+d1;
}
int main()
{
int n=20;
int i;
srand(time(0));
for(i=0;i<n;i++)
printf("%f\n",d_rand(2,5));
return 0;
}
运行:
4.402632
4.003647
3.899149
4.346965
2.213659
3.985603
2.351160
2.305648
3.429911
4.441609
4.609752
4.333788
2.327781
2.310551
4.318656
3.349993
3.331282
3.219280
2.395057
3.733473
请按任意键继续. . .追问
#include <stdlib.h>
#include <time.h>
double d_rand(int m,int n)
{
int ts,d;
double d1;
if(m==n)
return m*1.0;
if(m>n)
{
ts=m;m=n;n=ts;
}
d1=(rand()%1000*1000+rand()%1001)*1.0/1000000;
d=rand()%(n-m)+m;
return d*1.0+d1;
}
int main()
{
int n=20;
int i;
srand(time(0));
for(i=0;i<n;i++)
printf("%f\n",d_rand(2,5));
return 0;
}
运行:
4.402632
4.003647
3.899149
4.346965
2.213659
3.985603
2.351160
2.305648
3.429911
4.441609
4.609752
4.333788
2.327781
2.310551
4.318656
3.349993
3.331282
3.219280
2.395057
3.733473
请按任意键继续. . .追问
高人,再把那随机得到的n个数字再随机抽取1/3求平均数怎么做么!求高人指点
温馨提示:答案为网友推荐,仅供参考