funguje

du1/program.c

@@ -0,0 +1,18 @@
+#include<stdio.h>
+
+   int main(){
+	int counter=0, Sym;
+	char OutSym;
+
+	while(1){
+	  Sym=getchar();
+	 if(Sym==EOF || Sym==0)break;
+	 else if(Sym<='Z'&&Sym>='A')Sym +=32;
+	 else if(Sym<='z'&&Sym>='a')Sym-=32;
+	counter++;
+	OutSym=Sym;
+	putchar(OutSym);
+}
+	printf("\nPočet riadkov: %d\n",counter);
+   return 0;
+}