统计单词出现次数.cpp

对文档中的某一单词进行统计,使用C++在VC环境中开发.

#include <iostream>
#include<stdlib.h>
#include<stdio.h>
using namespace std;

int main()
{
	int num = 0;
	char a[200]={0};
	cout<<"Please enter the words: ";
	cin>>a;
    for(int i=0; i<200; i++)
	{
		if( ( a[i] >= 'a' && a[i] <= 'z') || ( a[i] >= 'A' && a[i] <= 'Z') )
		{
		
			switch( a[i] )
			{
			case 'a':
				num+=1;
				cout<<"The number of a is: ";
				cout<<num<<endl;
				num=0;
				break;
			case 'b':
				num++;
				cout<<"The number of b is: ";
				cout<<num<<endl;
				num=0;
				break;
			case 'c': 
				num++;
				cout<<"The number of c is: ";
				cout<<num<<endl;
				num=0;
				break;
			case 'd':
				num++;
				cout<<"The number of d is: ";
				cout<<num<<endl;
				num=0;
			    break;
			case 'e': 
				num++;
				cout<<"The number of e is: ";
				cout<<num<<endl;
				num=0;
				break;
			case 'f':
				num++;
				cout<<"The number of f is: ";
				cout<<num<<endl;
				num=0;
				break;
			case 'g': 
				num++;
				cout<<"The number of g is: ";
				cout<<num<<endl;
				num=0;
				break;
			case 'h':
				num++;
				cout<<"The number of h is: ";
				cout<<num<<endl;
				num=0;
				break;
			case 'i': 
				num++;
				cout<<"The number of i is: ";
				cout<<num<<endl;
				num=0;
				break;
			case 'j':
				num++;
				cout<<"The number of j is: ";
				cout<<num<<endl;
				num=0;
				break;
			case 'k': 
				num++;
				cout<<"The number of k is: ";
				cout<<num<<endl;
				num=0;
				break;
			case 'l':
				num++;
				cout<<"The number of l is: ";
				cout<<num<<endl;
				num=0;
				break;
			case 'm': 
				num++;
				cout<<"The number of m is: ";
				cout<<num<<endl;
				num=0;
				break;
			case 'n':
				num++;
				cout<<"The number of n is: ";
				cout<<num<<endl;
				num=0;
				break;
			case 'o': 
				num++;
				cout<<"The number of o is: ";
				cout<<num<<endl;
				num=0;
				break;
			case 'p':
				num++;
				cout<<"The number of p is: ";
				cout<<num<<endl;
				num=0;
				break;
			case 'q': 
				num++;
				cout<<"The number of q is: ";
				cout<<num<<endl;
				num=0;
				break;
			case 'r':
				num++;
				cout<<"The number of r is: ";
				cout<<num<<endl;
				num=0;
				break;
			case 's': 
				num++;
				cout<<"The number of s is: ";
				cout<<num<<endl;
				num=0;
				break;
			case 't':
				num++;
				cout<<"The number of t is: ";
				cout<<num<<endl;
				num=0;
				break;
			case 'u': 
				num++;
				cout<<"The number of u is: ";
				cout<<num<<endl;
				num=0;
				break;
			case 'v':
				num++;
				cout<<"The number of v is: ";
				cout<<num<<endl;
				num=0;
				break;
			case 'w': 
				num++;
				cout<<"The number of w is: ";
				cout<<num<<endl;
				num=0;
				break;
			case 'x':
				num++;
				cout<<"The number of x is: ";
				cout<<num<<endl;
				num=0;
				break;
			case 'y': 
				num++;
				cout<<"The number of y is: ";
				cout<<num<<endl;
				num=0;
				break;
			case 'z':
				num++;
				cout<<"The number of z is: ";
				cout<<num<<endl;
				num=0;
				break;
			}
			
		}
	}

	return 0;
}