代码实现:
1 #include<iostream>
2 #include<iomanip>
3 using namespace std;
4 void main()
5 {
6 char ch;
7 int letter=0,number=0,space=0,other=0;
8 while((ch=getchar())!='\n')
9 if('A'<=ch&&ch<='Z'||'a'<=ch&&ch<='z') letter++;
10 else if(ch==' ') space++;
11 else if('0'<=ch&&ch<='9') number++;
12 else other++;
13 cout<<letter<<setw(10)<<space<<setw(10)<<number<<setw(10)<<other<<endl;
14 }
预览图: