#include <stdio.h>

int main() {
    int a = 10;
    float b = 3.14;
    char c = 'a';
    char d[10]= "Hello";
    
    printf("a=%d\n", a);
    printf("b=%f\n", b);
    printf("c=%c\n", c);
    printf("d=%s\n", d);
    /*
    ======================================
    Hi, my name is Lee Hyun
    1
    2
    3.000000
    a
    b
    c
    ======================================
    */
    return 0;
}