1581, 1/80 ȸ¿ø°¡ÀÔ  ·Î±×ÀΠ 
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   http://souldesign.pe.kr
   [ÀÚÀÛ] [C¹®Á¦] ´ë¼Ò¹®ÀÚ ¹Ù²Ù±â

http://www.hackerschool.org/HS_Boards/zboard.php?id=Free_Lectures&no=1441 [º¹»ç]


[switch_upper_lower.c]

Q. ¾ËÆĺªÀ» ÀÔ·Â¹Þ¾Æ ´ë¹®ÀÚ´Â ¼Ò¹®ÀÚ·Î, ¼Ò¹®ÀÚ¸¦ ´ë¹®ÀÚ·Î º¯È¯ÇÏ¿© Ãâ·ÂÇ϶ó.

<ÀÔ/Ãâ·Â ¿¹>
Enter alphabets : aBcDeF
AbCdEf


A. ¿¹Á¦ ¼Ò½º

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

int main(void) {
        char txt[255];

        while(1) {
                printf("%s", "Enter alphabets : ");
                fgets(txt, sizeof(txt), stdin); //fgets¸¦ ÀÌ¿ëÇÏ¿© txt¿¡ Ç¥ÁØÀÔ·ÂÀ» ¹ÞÀ½
                
                int i;
                for(i=0; i<strlen(txt)-1; i++) { //txtÀÇ ±æÀÌ - 1(³Î¹®ÀÚ)¸¸Å­ ·çÇÁ
                        char ch = txt[i]; //txtÀÇ i¹ø° ¹®ÀÚ¸¦ ch¿¡ ´ëÀÔ
                        
                        if(ch >= 97 && ch <= 122) //ch°¡ ¼Ò¹®ÀÚÀÏ °æ¿ì
                                txt[i] -= 32; //txtÀÇ i¹ø° ¹®ÀÚ - 32

                        if(ch >= 65 && ch <= 90) //ch°¡ ´ë¹®ÀÚÀÏ °æ¿ì
                                txt[i] += 32; //txtÀÇ i¹ø° ¹®ÀÚ + 32
                                
                }

                printf("%s", txt);
        }


        return 0;
}

  Hit : 7240     Date : 2010/03/20 06:02



    
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