#include<stdio.h>
#include<string.h>
#define MAXSTRING 100
int main(void)
{   
    char c = 'a', *p, s[MAXSTRING];
    p = &c;
    printf("%c%c%c", *p, *p + 1, *p + 2);
    strcpy_s(s, "ABC");
    printf("%s %c%c%s\n", s, *s + 6, *s + 7, *s + 1);
    strcpy_s(s, "she sells sea sheels by the seashore");
    p = s + 14;
    for (; *p != '\0'; ++p){
        if (*p == 'e')
            *p = 'f';
        if (*p == ' ')
            *p = '\n';

    }
    printf("%s\n", s);

    return 0;
}