用输出半角和全角字符

来源：互联网发布：js 手机号验证编辑：程序博客网时间：2024/06/05 16:38

#include <stdio.h>#include <string.h>int main()  {  char szText[] = "我是CIW.";  char szChinese[3] = {0};  int i = 0, nLen = strlen(szText);  for(; i < nLen; i++)  {  if( szText[i] >= 0 && szText[i] <= 127 ) //不是全角字符？{printf("%c\n", szText[i]);  }else//是全角字符  {szChinese[0] = szText[i];szChinese[1] = szText[i + 1];printf("%s\n", szChinese);i++;//中文是2个字节,所以i++  }}  return 0;  }

计算文件大小

#include <sys/types.h>   #include <sys/stat.h>   #include <iostream.h>#include <string>using namespace std;int getFileSize(string sFileName){    struct stat buf;    int iRet = stat(sFileName.c_str(), &buf);    if (iRet == -1)        return NULL;    return buf.st_size;}void main(){int i = getFileSize("E:\\反恐精英csV1.6中文版.exe");cout<<i<<endl;}

去除字符串空格反转字符串

#include<iostream>#include<string>using namespace std;void  strallcut(char *str){    int i,j=0;    char sp[512];    for (i = 0; *(str + i) != '\0'; i++) {        if (*(str + i) == ' ' )            continue;        sp[j++]=*(str + i);    }    sp[j] = 0;    strcpy(str, sp);} void reverse(char s[]){for(int i=0,j=strlen(s)-1;i<j;++i,--j){int c = s[i];s[i] = s[j];s[j] = c;}}void main(){char temp[100] = "  hello  zhangsan word  ";cout<<temp<<endl;strallcut(temp);cout<<temp<<endl;reverse(temp);cout<<temp<<endl;}

统计文档中单词出现的次数

#include <iostream>#include <fstream>#include <string>#include <cstdlib>#include <map>using namespace std;void main(){ifstream read;typedef map<string,int> instrmap;instrmap coll;map<string,int>::iterator it1;ofstream display("word.txt");read.open("words.txt");coll.clear();while(!read.eof()){string word;read>>word;coll[word]++;}for(it1 = coll.begin();it1 != coll.end();it1++)cout<<it1->first<<" "<<it1->second<<endl;if (!display){cout<<"不能打开文件 word.txt"<<endl;}for(it1 = coll.begin();it1 != coll.end();it1++){if (it1->first!="the"&&it1->first!="an"&&it1->first!="a"&&it1->first!="but"&&it1->first!="and"&&it1->first!=" "){display<<"单词"<<it1->first<<" "<<"出现了"<<it1->second<<"次"<<endl;}}read.close();display.close();}

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