/*********************************************************************
 *
 * Purpose: Reverse characters in a string.
 * Author:  K&R
 * Date:    
 *
 *********************************************************************/

void reverse(char s[]);

main()
{
    char text[80]="martin";

    printf("string is %s\n", text);
    reverse(text);
    printf("string is %s\n", text);
}

void reverse(char s[])
{
    int c, i, j;
   
    for (i=0, j=strlen(s)-1; i < j;i++, j--)
    {
        c    = s[i];
        s[i] = s[j];
        s[j] = c;
    } 
}