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

int main() {
    printf("%.1f\n", pow(2,3));
    printf("%.1f\n", sqrt(4));
    printf("%.1f\n", ceil(1.2));
    printf("%.1f\n", ceil(-1.2));
    printf("%.1f\n", floor(1.2));
    printf("%.1f\n", floor(-1.2));

    char a[100]="woman";
    printf("크기: %lu\n", strlen(a));

    char dest[]="DLAB";
    char origin[]="W09";
    printf("결과 : %s\n", strcat(dest,origin));

    char A[]="AA";
    char B[]="AA";
    char C[]="BB";

    printf("A와 B 비교 : %d\n", strcmp(A,B));
    printf("A와 c 비교 : %d\n", strcmp(C,A));
    printf("A와 c 비교 : %d\n", strcmp(A,C));

    
    char str1[100];
    char str2[100];
    char combined[200];
    
    printf("두 문자열을 입력하세요 :\n");
    scanf("%99s %99s", str1, str2);

    size_t len1 = strlen(str1);
    size_t len2 = strlen(str2);

    printf("길이 : %ld %ld\n", len1, len2);

    strcpy(combined, str1);
    strcat(combined, str2);

    printf("합치기 : %s\n", combined);

    printf("비교 : %d\n", strcmp(str1, str2));
    
    return 0;
}