#include <stdio.h>

int main() {
    
    char a1;
    char a2;
    char a3;
    char a4;
    char a5;
    char *a6="Hello SiHyun";

    int b1 = 10;
    const int b2 = 20;
    int b3 = 30;
    int b4 = 40;
    /*
    a1='h';
    a2='e';
    a3='l';
    a4='l';
    a5='o';
    */
    scanf("%c%c%c", &a1,&a2,&a3);
    //scanf("%c", &a2);
    //scanf("%c", &a3);
    scanf("%c", &a4);
    scanf("%c", &a5);

    a1 = a1 + 10;
    b1 = b1 + 20; // b1 = 10 + 20 ==> b1 = 30
    //b2 = 20;
    b1=b1++; // b1++ ==> (b1+1) ==> b1=(30+1) ==> b1 = 31
    b3=b1++; // b1=> b1+1 --> 31+1 ==> 32, b3 = b1증가전값 : 31
    b4=++b1; // b1=> b1+1 --> 32+1 ==> 33, b4 = b1증가후값 : 33
    printf("%c%c%c%c%c\n", a1, a2, a3, a4, a5);
    printf("%d%c%d%c%d %d %d\n", a1+32, ' ', a2+32, 32, a3+32, a4+32, a5+32);
    printf("Hello\n");
    printf("%s\n", "hello");
    printf("%s\n", a6);
    printf("%d %d\n", b1, b2);
    return 0;
}