事无巨细，代码亦然

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事无巨细，代码亦然

重读C++Primer(第四版，李师贤等译)，做第六章的习题6.9。侯捷先生出了C++Primer3rd的习题集，于是对照看看。惭愧至极，事无巨细尤其是代码，大家编程，极小的细节如命名，输出等都考虑等令人惊叹。并且jjhou在习题6.9中体现出的及其严密的逻辑也是让我…

于是，将习题6.9的代码贴出来(jjhou)，程序在vc6.0中编译通过。

习题6.9:修改元音统计程序使其可以统计以下双字符序列出现的次数:ff、fl以及fi

完整代码:

#include<iostream>

#include<cctype>

using namespace std;

int main()

{

char ch;

int aCnt = 0, eCnt = 0, iCnt = 0, oCnt = 0, uCnt = 0,

blankCnt = 0, tabCnt = 0, newlineCnt = 0,

ffCnt = 0, flCnt = 0, fiCnt = 0,

consonantCnt = 0;

while( cin.get(ch) )

{

switch( ch )

{

case 'a': case 'A':

++aCnt;

break;

case 'e': case 'E':

++eCnt;

break;

case 'i': case 'I':

++iCnt;

break;

case 'o': case 'O':

++oCnt;

break;

case 'u': case 'U':

++uCnt;

break;

case ' ':

++blankCnt;

break;

case '/t':

++tabCnt;

break;

case '/n':

++newlineCnt;

break;

case 'f':

++consonantCnt;

cin.get(ch);

switch(ch)

{

case 'f':

++consonantCnt;

++ffCnt;

break;

case 'l':

++consonantCnt;

++flCnt;

break;

case 'i':

++iCnt;

++fiCnt;

break;

default:

cin.putback(ch);

break;

}

break;

default:

if( isalpha(ch) )

++consonantCnt;

break;

}

cout << "vowel a:" << aCnt << endl

<< "vowel e:" << eCnt << endl

<< "vowel i:" << iCnt << endl

<< "vowel o:" << oCnt << endl

<< "vowel u:" << uCnt << endl

<< "consonant:" << consonantCnt << endl

<< "ff:" << ffCnt << endl

<< "fl:" << flCnt << endl

<< "fi:" << fiCnt << endl

<< "blan:" << blankCnt << endl

<< "tab:" << tabCnt << endl

<< "newline:" << newlineCnt << endl;

return 0;

}