#include <stdlib.h>

#include <stdio.h>

#include <time.h>

#include <fstream>

#include <iostream>

using namespace std

struct Code

{

float a

char s

}

Code cc[8]={{0.25, a },{0.3, b },{0.1, c },{0.05, d },{0.05, e },{0.05, . },{0.05, , },{0.15, 8 }}



int main()

{

srand((unsigned)time(NULL))

int x

int n

ofstream outobj("plpl.txt")

cout<<"inpute the number(要产生的字符数):"

cin>>n

for(int i=0 i<n i++)

{

x=rand()％1000+1

int low =1

for(int j=0 j<8 j++)

{

int high=cc[j].a*1000+low-1

if(x>=low&&x<=high)

{

outobj<<cc[j].s

break

}

low = high+1

}

}

outobj.flush()

outobj.close()

} 存到.dat文件里面-# Include <stdlib.h># Include <stdio.h># Include <time.h># Include <fstream># Include <iostream> using namespace std struct Code (float a char s) Code cc [ 8] = ((0.25, a), (0.3, b), (0.1, c), (0.05, d), (0.05, e), (0.05,.), (0.05,,), (0.15, 8 )) int main () (srand ((unsigned) time (NULL)) int x int n ofstream outobj (　plpl.txt ) cout <<　inpute the number (to generate the number of characters):　cin>> n for (int i = 0 i <n i++) (x = rand () 1000+ 1 int low = 1 for (int j = 0 j <8 j++) (int high = cc [j] . a* 1000+ low-1 if (x> = low