xt3-16.cpp

来自「谭浩强C程序设计习题答案」· C++ 代码 · 共 21 行

#include <iostream>
using namespace std;
int main ()
{char c;
 int letters=0,space=0,digit=0,other=0;
 cout<<"enter one line::"<<endl;
 while((c=getchar())!='\n')
 {if (c>='a' && c<='z'||c>='A' && c<='Z')
	    letters++;
  else if (c==' ')
	    space++;
  else if (c>='0' && c<='9')
	    digit++;
  else
	    other++;
  }
  cout<<"letter:"<<letters<<", space:"<<space<<", digit:"<<digit<<", other:"<<other<<endl;
  return 0; 
  }