Removing duplicate words from a string

Code
int main()


{


        char arr[1000];


        char *temp=NULL;


        char *temp1=malloc(100);


        int len;


        printf("enter the string:


");


        gets(arr);


        len=strlen(arr);


        puts(arr);


        printf("len:%d


",len);


        temp=strtok(arr," ");


        


        if(temp!=NULL)


                strcpy(temp1,temp);


        


        while(temp!=NULL)


        {


                


                temp=strtok(NULL," ");


                


                if(strstr(temp1,temp)==NULL)


                {


                        


                        strcat(temp1," ");


                        strcat(temp1,temp);


                        


                }


        }


        strcpy(arr,temp1);


        printf("arr:%s",arr);


        return 0;


}


 
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This is giving me runtime error why ?

pro_learner
Profile Answers by pro_learner Questions by pro_learner
Apr 6th, 2013
6
17042

Questions by pro_learner

Answer

Showing Answers 1 - 6 of 6 Answers

jbode
Profile Answers by jbode Questions by jbode

Apr 10th, 2013
You need to check that temp isnt null after the call to strtok() in the loop. See the attachment for a fix.
Code
temp = strtok(NULL, " ");


 


if (temp != NULL && strstr(temp1,temp) == NULL)

mangesh

Feb 18th, 2015

How can we failed procedure in normal plsql code.

Vipul Behl

Oct 3rd, 2015

There is an easier way to do this, you can easily do this by using string functions strtok and strstr. See the code.

Code
#include<stdio.h>


#include<string.h>


int main()


{


        char s1[100],s2[100];


        char *token,*c;


        printf("Enter the first string : ");


        gets(s1);


        printf("Enter the second string : ");


        gets(s2);


        


        token=strtok(s1," ");


        while(token!=NULL)


        {


                c=strstr(s2,token);


                if(c)


                {


                        printf("%s


",token);


                }


                token=strtok(NULL," ");


        }


        return 0;


}