Append Character

#define _CRT_SECURE_NO_WARNINGS

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

char* appendCharacter(char, const char*);
inline char* appendCharacterToMyString(char, char*);

// I would consider this anything but memory efficient but oh well
char* appendCharacter(char character, const char* to)
{
    char* ret = NULL;

    size_t toLength = 0;
    size_t retLength = 0;

    if (to != NULL)
    {
        toLength = strlen(to);
    }

    retLength = toLength + 2; // Including NULL character

    ret = (char*)malloc(sizeof(char)*retLength);

    if (to != NULL)
    {
        strncpy(ret, to, toLength);
    }

    ret[retLength - 2] = character;
    ret[retLength - 1] = '\0';

    return ret;
}

// Just to simplify allocation and freeing of memory for our particular string (thus why it is inline)
inline char* appendCharacterToMyString(char character, char* to)
{
    char* ret = to;

    ret = appendCharacter(character, to);

    if (to != NULL)
    {
        free((void*)to);
    }

    return ret;
}

int main()
{
    char* myStr = NULL;
    char in;

    while ((in = getchar()) != '\n')
    {
        myStr = appendCharacterToMyString(in, myStr);
    }

    printf("%s\n", myStr);
    getchar();

    return 0;
}