#include <stdio.h>
 
size_t length( const char *s )
{
    const char *p = s;
 
    while ( *p ) ++p;
 
    return p - s;
}
 
char * reverse( char *s )
{
	char *p = s, *q = s + length( s );
 
	if ( p != q )
	{
		for ( ; p < --q; ++p )
		{
			char c = *q;
			*q = *p;
			*p = c;
		}
	}
 
    return s;
}
 
 
int main(void) 
{
	char s[] = "Computer";
 
	printf( "The length is %zu\n", length( s ) );
	printf( "The reversed string is %s\n", reverse( s ) );
 
	return 0;
}
 

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