if.cpp

来自「一本很好的C++学习的丛书！初学者必看的」· C++ 代码 · 共 21 行

// if.cpp -- using the if statement
#include <iostream>
int main()
{
    using namespace std;
    char ch;
    int spaces = 0;
    int total = 0;
    cin.get(ch);
    while (ch != '.')   // quit at end of sentence
    {
        if (ch == ' ')  // check if ch is a space
            ++spaces;
        ++total;        // done every time
        cin.get(ch);
    }
    cout << spaces << " spaces, " << total;
    cout << " characters total in sentence\n";
    return 0;
}