strcat.c

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 Copyright (c) 2017 Walt Elam
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/***************************************************************************//**
 @file strcat.c
 
 @brief Defines the strcat function
*******************************************************************************/
#include <string.h>
 
/*******************************************************************************
 strcat
*//**
 @brief Concatenates two strings
 @param *s1 Destination string
 @param *s2 String to be appended
 
 The strcat function appends a copy of the string pointed to by s2 (including
 the terminating null character) to the end of the string pointed to by s1.
 The initial character of s2 overwrites the null character at the end of s1.
 If copying takes place between objects that overlap, the behavior is
 undefined.
 
 @note If there is no null character in the first n characters of the array
 pointed to by s2, the result will not be null-terminated.
 
 @note Copying between overlapping objects is supported, but the source may
 be overwritten.
 
 @return The value of s1
*******************************************************************************/
char *
strcat(char *s1, const char *s2)
{
 strcpy(s1 + strlen(s1), s2);
 return s1;
}