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Top Forums Programming Concatenating array of strings into one string separated by spaces Post 302278219 by newhere on Monday 19th of January 2009 04:13:54 PM
Old 01-19-2009
Quote:
Originally Posted by shamrock
Code:
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

char *get_full_name(const char **t)
{
    char *f=NULL;
    
    while (*t) {
        f = (char *) realloc(f, strlen(*t)+strlen(f)+1);
        sprintf(f,"%s%s%s",f,(strlen(f)?" ":""),*t++);
    }
    return f;
}

int main(int argc, char **argv)
{
    const char *str[] = {"John", "Quincy", "Adams", NULL};
    char *res;

    res = get_full_name(str);
    printf("Result: <%s>\n", res);
    return 0;
}

Hi,

Thats interesting. But it segfaults for me, when it calls to strlen.

Thanks.
 

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STRING(3)						   BSD Library Functions Manual 						 STRING(3)

NAME
index, rindex, stpcpy, strcasecmp, strcat, strchr, strcmp, strcpy, strcspn, strerror, strlen, strncasecmp, strncat, strncmp, strncpy, strpbrk, strrchr, strsep, strspn, strstr, strtok -- string specific functions LIBRARY
Standard C Library (libc, -lc) SYNOPSIS
#include <strings.h> char * index(const char *s, int c); char * rindex(const char *s, int c); int strcasecmp(const char *s1, const char *s2); int strncasecmp(const char *s1, const char *s2, size_t n); #include <string.h> char * stpcpy(char *dst, const char *src); char * strcat(char *restrict s1, const char *restrict s2); char * strchr(const char *s, int c); int strcmp(const char *s1, const char *s2); char * strcpy(char *restrict s1, const char *restrict s2); size_t strcspn(const char *s1, const char *s2); char * strerror(int errnum); size_t strlen(const char *s); char * strncat(char *restrict s1, const char *restrict s2, size_t n); int strncmp(const char *s1, const char *s2, size_t n); char * strncpy(char *restrict s1, const char *restrict s2, size_t n); char * strpbrk(const char *s1, const char *s2); char * strrchr(const char *s, int c); char * strsep(char **stringp, const char *delim); size_t strspn(const char *s1, const char *s2); char * strstr(const char *s1, const char *s2); char * strtok(char *restrict s1, const char *restrict s2); DESCRIPTION
The string functions manipulate strings that are terminated by a null byte. See the specific manual pages for more information. For manipulating variable length generic objects as byte strings (without the null byte check), see bstring(3). Except as noted in their specific manual pages, the string functions do not test the destination for size limitations. SEE ALSO
bstring(3), index(3), rindex(3), stpcpy(3), strcasecmp(3), strcat(3), strchr(3), strcmp(3), strcpy(3), strcspn(3), strerror(3), strlen(3), strpbrk(3), strrchr(3), strsep(3), strspn(3), strstr(3), strtok(3) STANDARDS
The strcat(), strncat(), strchr(), strrchr(), strcmp(), strncmp(), strcpy(), strncpy(), strerror(), strlen(), strpbrk(), strspn(), strcspn(), strstr(), and strtok() functions conform to ISO/IEC 9899:1990 (``ISO C90''). BSD
December 11, 1993 BSD
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