#include <iostream.h>
#include <stdlib.h>
#include <fstream.h>
#include <time.h>
//#define FILE_OUT "ran.out" void Fill_It(int *ptr_s,int *ptr_u,int *ptr_d,int ran[20])
{
int i,rand_num,temp;
srand(*ptr_s);
for(i=0;i <20;i++)
{
rand_num=rand();
temp=*ptr_d+(rand_num%(*ptr_u-*ptr_d));
ran[i]=temp;
}
}
int main()
{
int seed,ubound,dbound,i,rand1[20],rand2[20];
ofstream SaveFile("rand.txt");
//ofstream output;
//output.open(FILE_OUT,ios::out);
cout <<"please input seed and ubound,dbound:" <<endl;
cin>>seed>>ubound>>dbound;
Fill_It(&seed,&ubound,&dbound,rand1);
for(i=1;i <20;++i)
cout <<rand1[i] <<ends;
cout <<endl;
for(i=1;i<20;++i)
{SaveFile<<rand1[i]<<ends;//output<<rand1[i]<<ends;
}SaveFile<<endl;
cout <<"please input seed and ubound,dbound again:" <<endl;
cin>>seed>>ubound>>dbound;
Fill_It(&seed,&ubound,&dbound,rand2);
for(i=1;i<20;++i)
cout <<rand2[i]<<ends;
cout <<endl;
for(i=1;i<20;++i)
{SaveFile<<rand2[i]<<ends;//output<<rand2[i]<<ends;
}
//output.close();
SaveFile.close();
system("pause");
return 0;
}
这两种输出有什么区别呢？为什么后一种无法输出？
