Wednesday, August 15, 2007

Write your own trim() or squeeze() function to remove the spaces from a string.

#include < stdio.h >

char *trim(char *s);

int main(int argc, char *argv[])
char str1[]=" Hello I am Good ";
printf("\n\nBefore trimming : [%s]", str1);
printf("\n\nAfter trimming : [%s]", trim(str1));


// The trim() function...

char *trim(char *s)
char *p, *ps;

for (ps = p = s; *s != '\0'; s++)
if (!isspace(*s))
*p++ = *s;

*p = '\0';


And here is the output...

Before trimming : [ Hello I am Good ]
After trimming : [HelloIamGood]

Another version of this question requires one to reduce multiple spaces, tabs etc to single spaces...


riya said...

cnt we do this without using pointers?

praveen said...

can u just tell how to remove the beginning and end white spaces alone

Anonymous said...

char *trim_string(char *str)
int i=0,j=0;
while(str[j] != '\0')
if(str[j] == ' ')
return &str;

sandeep kumar said...

Thanks for the info. It is very helpful.

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