Question 9: Compile the stringcat function to connect strings. in the program, you must use pointers to access strings.

/*************************************** ************************
(C language)

AUTHOR: liuyongshui
DATE :********
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/*
Question 9: Compile the stringcat function,
Achieve string connection,
The program needs to use a pointer to access the string

*/

# Include <stdio. h>

# Deprecision MAX 100

Char * StringCat (char * source, const char * dest); // original function declaration

Int main ()
{
Char s1 [MAX] = "I LOVE ";
Char * s2 = "C ++ and C language! ";

StringCat (s1, s2); // string connection

Printf ("% s \ n", s1 );

Return 0;
}

// Function Definition

Char * StringCat (char * source, const char * dest)
{
// Int I = 0;
// Int j;

While (* source ++); // null statement to move the pointer to the end

* Source --; // move one digit forward, because one digit is moved backward before the end of the previous step.

While (* dest! = '\ 0') // It ends when' \ 0' is encountered. This sentence is equivalent to while (* dest! = '\ 0 ')
{
* Source ++ = * dest ++; // assign the value in dest to source
}

Return 0;
}