C++ Programming Ch.4 Exercise 13 Solution

Wed, 04 Mar 2020 17:45:19 +0900

Problem:

영문자로 구성된 텍스트에 대해 각 알파벳에 해당하는 문자가 몇 개인지 출력하는 히스토그램 클래스 Histogram을 만들어보자.

대문자는 모두 소문자로 변환하여 처리한다.

Histogram 클래스를 활용하는 사례와 Execution Result는 다음과 같다.


1 2 3 4 5	Histogram elvisHisto("Wise men say, only fools rush in But I can't help, "); elvisHisto.put("falling in love with you"); elvisHisto.putc('-'); elvisHisto.put("Elvis Presley"); elvisHisto.print();

Execution Result:

Objective & Hints:

클래스 만들기 종합 응용

Code:


1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55	#include #include using namespace std; class Histogram { string sent; public: Histogram(string sent); void put(string sent); void putc(char c); void print(); }; Histogram::Histogram(string text){ sent = text; cout << sent << endl; } void Histogram::put(string text){ sent += text; cout << text; } void Histogram::putc(char c){ sent += c; cout << c; } void Histogram::print(){ int alpha[26] = { 0 }; int num = 0; for (int i = 0; i < sent.length(); i++) { if(isalpha(sent[i])){ char c = tolower(sent[i]); alpha[c - 'a']++; num++; } } cout << endl << endl; cout << "총 알파벳 수 " << num; cout << endl << endl; for (int i = 0; i < 26; ++i) { char c = 'a' + i; cout << c << " (" << alpha[i] << ")\t: "; for (int j = 0; j < alpha[i]; ++j) { cout << "*"; } cout << endl; } } int main() { Histogram elvisHisto("Wise men say, only fools rush in But I can't help, "); elvisHisto.put("falling in love with you"); elvisHisto.putc('-'); elvisHisto.put("Elvis Presley"); elvisHisto.print(); }

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#include #include using namespace std; class Histogram { string sent; public: Histogram(string sent); void put(string sent); void putc(char c); void print(); }; Histogram::Histogram(string text){ sent = text; cout << sent << endl; } void Histogram::put(string text){ sent += text; cout << text; } void Histogram::putc(char c){ sent += c; cout << c; } void Histogram::print(){ int alpha[26] = { 0 }; int num = 0; for (int i = 0; i < sent.length(); i++) { if(isalpha(sent[i])){ char c = tolower(sent[i]); alpha[c - 'a']++; num++; } } cout << endl << endl; cout << "총 알파벳 수 " << num; cout << endl << endl; for (int i = 0; i < 26; ++i) { char c = 'a' + i; cout << c << " (" << alpha[i] << ")\t: "; for (int j = 0; j < alpha[i]; ++j) { cout << "*"; } cout << endl; } } int main() { Histogram elvisHisto("Wise men say, only fools rush in But I can't help, "); elvisHisto.put("falling in love with you"); elvisHisto.putc('-'); elvisHisto.put("Elvis Presley"); elvisHisto.print(); }

Explanation:

Toupper on Sobamemil

C++ Programming Ch.4 Exercise 13 Solution