View Code of Problem 43

#include<cstdio>
#include<string>
#include<iostream>
using namespace std;

int main(){
	string str;
	cin>>str;
	int len=str.length();
	for(int i=0;i<len;i++){
		if((str[i]>='A'&&str[i]<='Z')||(str[i]>='a'&&str[i]<='z'))	printf("%c",str[i]);
	}
	return 0;
}