#include   <stdio.h>
#include  <string.h>


char c      = 'g';
char sz[99] = "an apple is very tasty";


////////////////////////////////////////////////////////
int main()
{

    for(int i = 0; i < strlen(sz); i++)
    {
        sz[i] ++;
    }

    printf("sz  = %s\n", sz );

    for(int i= 0; i < strlen(sz); i++)
    {
        sz [i]--;
    }

    printf("sz  = %s\n", sz );
    printf("77 = %d\n", 77);
    printf("c  = %c\n", c );
    printf("c  = %d\n", c );

return 0;
}