Programming

char *BUFFER = NULL;

char *STRREVERSE(const char *STRING)
{
	BUFFER = (char *)realloc(BUFFER, strlen(STRING) + 1);

	size_t COUNT = 0;
	size_t LENGTH = strlen(STRING) - 1;

	while(COUNT <= LENGTH)
	{
		BUFFER[COUNT] = STRING[LENGTH - COUNT];

		COUNT++;
	}

	BUFFER[COUNT] = '\0';

	return BUFFER;
}

int main(void)
{
	printf("%s\n%s\n%s\n", STRREVERSE("john"), STRREVERSE("jack"), STRREVERSE("jill"));

	return 0;
}

#include <string.h>
#include <string.h>
#include <stdlib.h>
#include <stdio.h>

char *
strrev(char *src)
{
   char *p=src;
   char *q=strchr(src,'\0');
   char tmp=0x0;
   
   for(q--; q>p; q--,p++)
   {
      tmp=*q;
      *q=*p;
      *p=tmp;
   }
   return src;
}


int main()
{
    char one[12]={0x0};
    char two[12]={0x0};
    char three[12]={0x0};
    strcpy(one, "jack");
    strcpy(two, "jill");
    strcpy(three, "john");
    printf("%s\t %s\t  %s\n", strrev(one), strrev(two), strrev(three));
}

char *STRREVERSE(const char *STRING)
{
        char *BUFFER = NULL;
        BUFFER = (char *)realloc(BUFFER, strlen(STRING) + 1);

        size_t COUNT = 0;
        size_t LENGTH = strlen(STRING) - 1;

        while(COUNT <= LENGTH)
        {
                BUFFER[COUNT] = STRING[LENGTH - COUNT];

                COUNT++;
        }

        BUFFER[COUNT] = '\0';

        return BUFFER;
}

int main(void)
{
        printf("%s\n%s\n%s\n", STRREVERSE("john"), STRREVERSE("jack"), STRREVERSE("jill"));

        return 0;
}

==31733== ERROR SUMMARY: 0 errors from 0 contexts (suppressed: 8 from 1)
==31733== malloc/free: in use at exit: 15 bytes in 3 blocks.
==31733== malloc/free: 3 allocs, 0 frees, 15 bytes allocated.