#include<bits/stdc++.h>
using namespace std;
int main() {
	char a;
	int num=0,let=0,oth=0;
	while(scanf("%c",&a)==1) {
		if(a=='?')break;
		if(a>='0'&&a<='9')num++;
		if(a>='A'&&a<='Z')let++;
		if(a>='a'&&a<='z')let++;
		if(a<48 || a>122)oth++;
		if(a>57 && a<65)oth++;
		if(a>90 && a<97)oth++;
	}
	cout<<let<<endl<<num<<endl<<oth;
}

半恼

Python的哦~

x=input()
a=0;b=0;c=0
for i in x:
    if i=="?":
        break
    if "0"<=i<="9":
        b+=1
    elif "a"<=i<="z" or "A"<=i<="Z":
        a+=1
    else:
        c+=1
print(a)
print(b)
print(c)

C++ :

#include <iostream>
#include <fstream>
#include <sstream>
using namespace std;

int main()
{   char a;
 int b=0,c=0,d=0;
while(scanf("%c",&a)==1){
    if(a=='?'){break;}
    if(a>=65 && a<=90){b=b+1;}
    if(a>=97 && a<=122){b=b+1;}
    if(a>=48 && a<=57){c=c+1;}
    if(a<48 || a>122){d=d+1;}
    if(a>57 && a<65){d=d+1;}
    if(a>90 && a<97){d=d+1;}
}
printf("%d\n%d\n%d",b,c,d);
    return 0;
}