字符串操作

悠悠 2021-12-17 02:51 387阅读 0赞

对给定字符串删除特定字符或者是特定字符串。对字符串操作一定要注意结束符'\\0'的处理。

// StrDeleteChar.cpp : 定义控制台应用程序的入口点。
    //
    
    #include "stdafx.h"
    
    void StrDeleteChar(char *str, char ch)
    {
         //删除字符串str中的指定字符ch
        int i, j;
        for (i = 0,j = 0; str[i] != '\0'; i++)
        {
            if (str[i] != ch)
            {
                str[j++] = str[i];
            }
        }
        str[j] = '\0';
    }
    
    void StrDeleteWord(char *str, char *wd)
    {
         //删除字符串中str中的指定单词wd
        int i,j,k;
        int len = strlen(wd);
        for (i=0,j=0,k=0; str[i] != '\0'; i++)
        {
            //字符不相等
            if (str[i] != wd[j])
            {
                str[k++] = str[i];
                j = 0;
            }
            else
            {
                while (str[i] == wd[j] && j < len)
                {
                    i++;
                    j++;
                }
                //匹配
                if (j == len)
                {
                    //str[k] = str[i];
                    j = 0;
                    --i;
                }
                else   //不匹配
                {
                    i = i- j;
                    j = 0;
                    str[k++] = str[i];
                }
            }
        }
        str[k] = '\0';
    }
    
    int _tmain(int argc, _TCHAR* argv[])
    {
        char str[] = "I amtion a student, haha";
        StrDeleteChar(str, 'a');
        printf("After delete :%s\n", str);
        char str1[] = "Hello world,I amamam here am haha.";
        char wd[] = "am";
        StrDeleteWord(str1,wd);
        printf("After delete word: %s,the result is:%s\n",wd,str1);
        
        return 0;
    }
    
    
    2014/4/16 20:40

转载于:https://www.cnblogs.com/Jason-Damon/p/3669629.html