View Code of Problem 25

#include <iostream>
#include <iomanip>
#include <cmath>

using namespace std;
int main( )
{
    char a;

    while(cin>>a)
    {
        if(a>=49 && a<=57)
        {

        }
        else
        {
            if(a>=97 && a<=122)
            {
                a=a-32;
            }
            else
            {
                a=a+32;
            }

            cout << a<<endl ;
        }
    }
    return 0;
}

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