#include<iostream> #include<string> using namespace std; int main() { string str; while(getline(cin, str)) { int length = str.length(); int iLetter=0,iSpace=0,iNum=0,iOther=0; for(int i=0; i<length; i++) { if(str[i]-'a'>=0 && str[i]-'z'<=0) { iLetter ++; } else if(str[i]...