注意函数 write(char[],int n) //n是要写入的字符的个数
#include <iostream>
#include <fstream>
using namespace std;
const char week[7][12]={"Monday","Tuesday","Wednesday","Thirsday","Friday","Saturday","Sunday"};
typedef struct
{
char ch; //字符
int num; //字符个数
}CType;
int Record(char s[],int count,CType cnum[])
{
int i,j,k=0; //k记录cnum中元素的个数，即是字符的种类
for(i=0;i<count;i++) //对原始串元素逐个进行检查
{
if(k==0) //cnum中没有元素的时候，将s[i]直接放到cnum中
{
cnum[k].ch = s[i];
cnum[k].num = 1;
k++;
}
else
{ //cnum中存在元素时，查找是否有相同的字符
for(j=0;j<k && s[i]!=cnum[j].ch;j++)
; //空操作只是为了逐次检查cnum中已有的每个元素
if(j>=k) //s[i]不在cnum中,添加进来
{
cnum[k].ch = s[i];
cnum[k].num = 1;
k++;
}
else //s[i]在cnum中,增加cnum中该元素的计数
cnum[j].num++;
}
}
return k;
}
int main()
{
char str[10000] = {0};
char str1[10000] = {0};
CType cnum[128];
int i=0;
ifstream infile("originate.txt",ios::in);
if(!infile)
{
cerr<<"原始文件打开错误!"<<endl;
exit(1);
}
while(infile.get(str[i]))
i++;
infile.close();
cout<<str<<endl<<i<<endl;
ofstream outfile("new.txt",ios::out);
if(!outfile)
{
cerr<<"生成文件错误!"<<endl;
exit(1);
}
for(int j=0;j<i;j++)
{
if(str[j]=='1')
outfile.write(week[0],6);
else if(str[j]=='2')
outfile.write(week[1],7);
else if(str[j]=='3')
outfile.write(week[2],9);
else if(str[j]=='4')
outfile.write(week[3],8);
else if(str[j]=='5')
outfile.write(week[4],6);
else if(str[j]=='6')
outfile.write(week[5],8);
else if(str[j]=='7')
outfile.write(week[6],6);
else
outfile.put(str[j]);
}
outfile.close();
cout<<"替换完毕，见根目录下文件'new.txt'"<<endl;
cout<<"统计新文件中的非数字字符出现的情况如下:"<<endl;
ifstream infile1("new.txt",ios::in);
if(!infile1)
{
cerr<<"原始文件打开错误!"<<endl;
exit(1);
}
i = 0;
while(infile1.get(str1[i]))
i++;
ofstream outfile1("static.txt",ios::out);
if(!outfile1)
{
cerr<<"生成文件错误!"<<endl;
exit(1);
}
int k = Record(str1,i,cnum);
for(j=0;j<k;j++)
{
if(cnum[j].ch>=65 &&cnum[j].ch<=90 || cnum[j].ch>=97 &&cnum[j].ch<=122) //只统计字符串中字母的个数
{
cout<<cnum[j].ch<<":"<<cnum[j].num<<endl;
outfile1<<cnum[j].ch<<":"<<cnum[j].num<<endl;
}
}
return 0;
}