Update 'du1/program.c'

du1/program.c

@@ -3,10 +3,10 @@ int main(){
 	int r;
 while((r = getchar()) !=EOF && r){
 	if(r >= 'a' && r <= 'z'){
-	c = 'a' + 'A';
+	r = 'a' + 'A';
 }
 	else if(c >= 'A' && c <= 'Z'){
-		c = 'A' + 'Z';
+		r = 'A' + 'Z';
 	}
 }
 printf("Počet riadkov: %d\n");