C程序用于删除字符串中的重复字符...显示运行时错误 [英] C program for removing duplicate characters in a string...Shows run time error

问题描述

我写了以下函数来从字符串中删除重复的字符。例如：如果
str =heeello;
removeDuplicate（str）

将返回helo ...但它在运行时显示一些错误。我添加了一些printf（）语句进行调试...任何人都可以告诉我问题是什么？

  char * removeDuplicate（char str []）//从字符串中删除重复的字符，以便字符串中的每个字符不重复
 {
 int i = 0，j; 
 char ch; 
 printf（\\\
str is％s，str）; 
 while（（ch = str [i ++]）！='\\ \\
 {
j = i; 
 printf（\\\
 ---- ch =％c ----，ch）; 
 while（str [j]！='\0'）
 {
 printf（\\\
 --------检查％c =％c \\\
，str [j] ，ch）; 
 if（ch == str [j]）
 {
 printf（\\\
 ------------是）; 
 while（str [j]！='\0'）
 {
 printf（\\\
Removing％c％d  -  \\\
，str [j]）; 
 str [j] = str [++ j]; 
 --i 
 
} 
 
 break; 
} 
 printf（\\\
 ------------否）; 
 
 // printf（\\\
jj）; 
 j ++; 
} 
} 
 
 return str; 
} 
  

解决方案

你传递一个字符串文字，您不能修改此功能，而应该执行以下操作：

  char myStr [] =heee; 
 removeDuplicate（myStr）; 
  

另请注意，在以下行中，您必须在printf（％c％d ），但只传递一个参数（ str [j] ）：

  printf（\\\
Removing％c％d  -  \\\
，str [j]）; 
  

这可能会导致各种不良事情...

I wrote the following function for removing duplicate characters from a string..For ex: if str = "heeello; removeDuplicate(str)

will return helo...But it shows some error on runtime .I have added some printf() statements for debugging...Can anyone tell me what the problem is ?

char* removeDuplicate(char str[])//remove duplicate characters from a string,so that each character in                a string is not repeating  
{
    int i = 0,j;
    char ch;
    printf("\nstr is %s",str);
    while((ch = str[i++] )!= '\0')
    {
    j = i;
    printf("\n----ch = %c----",ch);
    while(str[j] != '\0')
    {
        printf("\n--------Checking whether %c =  %c \n",str[j],ch);
        if(ch == str[j])
        {
            printf("\n------------Yes");
            while(str[j]!='\0')
            { 
                printf("\nRemoving %c %d -- \n",str[j]);
                str[j] = str[++j];
                --i;

            }

            break;
        }
        printf("\n------------No");

       //printf("\njj");
        j++;
    }
}

return str;
}

解决方案

You are passing a string literal, which you are not allowed to modify to this function, instead you should do:

char myStr[] = "heee";
removeDuplicate(myStr);

Also, please note that in the following lines your have to specifiers inside the printf (%c %d), but you pass only one argument (str[j]):

printf("\nRemoving %c %d -- \n",str[j]);

This may cause all sorts of bad things...

这篇关于C程序用于删除字符串中的重复字符...显示运行时错误的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！