this is the code for changing lower case to upper case.
can u write something similar to dis for changing upper to lower case
,( i mean using BITWISE operators such type of operators ^ , | , & , ~
, ! )
#include <iostream>
#include <cctype>
using namespace std;
int main() {
string str;
cin>>str;
unsigned int i, n = str.size();
for(i = 0;i < n;++i)
str[i] = isalpha(str[i]) ? (str[i] &(~32)) : str[i];
cout<<str<<endl;
}
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