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Swap different size string

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# 1  
Old 06-29-2010
Swap different size string
how can I write a function to swap to different sized string?
# 2  
Old 06-29-2010
Code:
void swap2str(char *a, char *b)
{
     char *tmp=malloc(strlen(a)+strlen(b)+2);
     strcpy(tmp,a);
     strcpy(a,b);
     strcpy(b,tmp);
     free(tmp);
}

One way. This requires that the original strings are each declared as big enough to hold the other -
i.e.,
Code:
char a[32]={0x0};
char b[32]={0x0};
strcpy(a, "junk");
strcpy(b,"even more junk");
swap2str(a,b);

# 3  
Old 06-29-2010
thanks jim for the reply
the first method is more promising
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