a1

a1/program.c

@@ -6,19 +6,19 @@ int main(){
     int line_count = 0;
     
     while((ch = getchar()) != EOF){
-        if(ch >= 'a' && ch <= 'z'){
-           putchar(ch - ('a' - 'A'));
-        }else if(ch >= 'A' && ch <= 'Z'){ 
-           putchar(ch + ('a' - 'A'));
+        if(islower(ch)){
+           putchar(toupper(ch));
+        }else if(isupper(ch)){
+           putchar(tolower(ch));
         }else{
             putchar(ch);
             if(ch == '\n'){
-                line_count++;
+               line_count++;
             }
         }
     }
     
-    printf("\nPocet nacitanych riadkov: %d\n", line_count);
+    printf("Pocet nacitanych riadkov: %d\n", line_count);
     return 0;
 }