View Code of Problem 43

#include <iostream>
#include <cstdio>
#include <cstring>
using namespace std;
int main(){
    char a[999];
    cin>>a;
    for(int i=0;i<strlen(a);i++){
        if((a[i]>='a'&&a[i]<='z')||(a[i]>='A'&&a[i]<='Z')){
            cout<<a[i];
        }
    }
    cout<<endl;
    return 0;
}