#include <iostream>
#include <cctype>
using namespace std;
int main() {
const char *str = "This is a test. 1 2 3 4 5";
int letters = 0, spaces = 0, punct = 0, digits = 0;
cout << str << endl;
while(*str) {
if(isalpha(*str))
++letters;
else if(isspace(*str))
++spaces;
else if(ispunct(*str))
++punct;
else if(isdigit(*str))
++digits;
++str;
}
cout << "Letters: " << letters << endl;
cout << "Digits: " << digits << endl;
cout << "Spaces: " << spaces << endl;
cout << "Punctuation: " << punct << endl;
return 0;
}
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