Monday, July 9, 2007

Write a simple piece of code to split a string at equal intervals.

Suppose you have a big string


This is a big string which I want to split at equal intervals, without caring about the words.


Now, to split this string say into smaller strings of 20 characters each, try this


#define maxLineSize 20

split(char *string)
{
int i, length;
char dest[maxLineSize + 1];

i = 0;
length = strlen(string);

while((i+maxLineSize) <= length)
{
strncpy(dest, (string+i), maxLineSize);
dest[maxLineSize - 1] = '\0';
i = i + strlen(dest) - 1;
printf("\nChunk : [%s]\n", dest);
}

strcpy(dest, (string + i));
printf("\nChunk : [%s]\n", dest);
}
at

11 comments:

  1. AnonymousSeptember 8, 2007 at 6:10 PM

    "while((i+maxLineSize) <= length)
    {
    strncpy(dest, (string+i), maxLineSize);
    dest[maxLineSize - 1] = '\0';
    i = i + strlen(dest) - 1;
    printf("\nChunk : [%s]\n", dest);
    }"

    "i = i + strlen(dest) - 1;" might be an overkill, since you should always be advancing "maxLineSize", and strlen() is expansive ...

    ReplyDelete
  2. AnonymousJanuary 6, 2008 at 10:44 AM

    Another efficient way of doing the same functionality....
    (sorry for no comments though)

    #include "stdio.h"
    #include "memory.h"
    #include "TCHAR.H"

    const int SplitInterval = 5;

    void Split(char InputString[])
    {
    char pTemp[SplitInterval+1];
    memset(pTemp,'\0',SplitInterval+1);
    int iLength = strlen(InputString);
    int index = 0;
    while(index < iLength)
    {
    strncpy(pTemp,(InputString+index),5);
    index+= SplitInterval;
    printf("Chunk : [%s] \n", pTemp);
    }
    }

    void main()
    {
    char pInput[] = "Let us make world a better place to live in by contributing as much as possible.";
    Split(pInput);
    }

    ReplyDelete
  3. AnonymousOctober 15, 2011 at 10:57 AM

    str[]="abcdefghijklmnopqrstuvwxyz";
    int i,j;
    intk=0;
    while(i<strlen(str))
    {
    for(j=0;j<split;j++)
    {
    if(str[k]!='\0')
    {
    str1[k++]=str[i++];
    }
    str1[k++]='\0';
    }
    }
    }

    ReplyDelete
  4. AnonymousOctober 15, 2011 at 10:58 AM

    OUTPUT:

    ab cd ef gh ij kl mn op qr st uv wx yz

    ReplyDelete
  5. AnonymousDecember 2, 2011 at 12:31 AM

    // Return the number of strings formed
    int split_string(const char* sz, const int nSize)
    {
    char dest[nSize + 1];
    int nCount = 0;
    int nSrcIndex = 0;
    int nDstIndex = 0;

    dest[nSize] = '\0';
    while (*sz)
    {
    dest[nDstIndex] = *sz;

    if ((nSize - 1) == nDstIndex)
    {
    cout << dest << endl;
    nCount++;
    }

    nSrcIndex++; sz++;
    nDstIndex = nSrcIndex % nSize;
    }

    if (nDstIndex > 0)
    {
    dest[nDstIndex] = '\0';
    cout << dest << endl;
    nCount++;
    }

    return nCount;
    }

    ReplyDelete
  6. vikas kumar jainDecember 8, 2011 at 11:49 PM

    #include
    #include
    #include
    void main()
    {
    char str[]="vikaskumarjain";
    char str1[18];
    int i=0 ,j,k=0;
    int split=2;
    //clrscr();
    while(i<strlen(str))
    {
    for(j=0;j<split;j++)
    {
    str1[j++]=str[i++];
    printf("%c",str1[--j]);
    }
    //str1[j++]='\0';
    printf(" ");
    }



    getch();
    }

    ReplyDelete
  7. vikas kumar jainDecember 8, 2011 at 11:50 PM

    #include
    #include
    #include
    void main()
    {
    char str[]="vikaskumarjain";
    char str1[18];
    int i=0 ,j,k=0;
    int split=2;
    //clrscr();
    while(i<strlen(str))
    {
    for(j=0;j<split;j++)
    {
    str1[j++]=str[i++];
    printf("%c",str1[--j]);
    }
    //str1[j++]='\0';
    printf(" ");
    }



    getch();
    }

    ReplyDelete
  8. vikas kumar jainDecember 8, 2011 at 11:50 PM

    #include
    #include
    #include
    void main()
    {
    char str[]="vikaskumarjain";
    char str1[18];
    int i=0 ,j,k=0;
    int split=2;
    //clrscr();
    while(i<strlen(str))
    {
    for(j=0;j<split;j++)
    {
    str1[j++]=str[i++];
    printf("%c",str1[--j]);
    }
    //str1[j++]='\0';
    printf(" ");
    }



    getch();
    }

    ReplyDelete
  9. UnknownJuly 8, 2012 at 8:48 AM

    This comment has been removed by the author.

    ReplyDelete
  10. UnknownJuly 8, 2012 at 8:49 AM

    This code will split the string at equal intervals

    #include
    #include
    #define split 3
    using namespace std;
    int main()
    {
    string s="PROGRAMMING",ss;
    int start=0,i;
    for(i=1;i<=(s.length()/split)+(s.length()%split?1:0);i++)
    {
    ss=s.substr(start,split);
    start+=split;
    cout<<ss<<" ";
    }
    }

    ReplyDelete
  11. UnknownOctober 31, 2012 at 3:49 PM

    Thanks for the info. It is very helpful.
    RegardsEducational site
    Get jobs info at Educational site

    ReplyDelete