alistirma1.c

/* 
 * File:   main.c
 * Author: alaattin
 *
 * Created on 18 Mart 2013 Pazartesi, 21:54
 */

#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>

/*
 * 
 */
int main(int argc, char** argv) {
    
    char karakter;
    
    printf("Bir karakter giriniz: \n");
    
    for(; ;){
        
        
        karakter = getchar();
        
        if(isupper(karakter) != 0){
            
            putchar(tolower(karakter));
            printf("\n");
            
        
        }
        
        else if(islower(karakter) != 0){
        
            putchar(toupper(karakter));
            printf("\n");
        
        }
    }
    
    

    return (EXIT_SUCCESS);
}