c sort alphabatics
#include<bits/stdc++.h>
using namespace std;
void solution_function(){
//make modifications in the code below for accepting input from console /
string str;
getline(cin,str);
for(int i=0;str[i] !='\0';i++)
{
if(isalpha(str[i]))
{
if(islower(str[i]))
str[i] = toupper(str[i]);
else
str[i] = tolower(str[i]);
}
}
cout<<str;
}
int main(){
solution_function();
}