型と演算について確認する

明解Ｃ言語入門編 > 2. 演算と型 >

C++



#include <iostream.h>
int main(int argc, char* argv[])

{

    int     n1, n2, n3, n4;

    double  d1, d2, d3, d4;
    n1 = 5   / 2;

    n2 = 5.0 / 2.0;

    n3 = 5.0 / 2;

    n4 = 5   / 2.0;
    d1 = 5   / 2;

    d2 = 5.0 / 2.0;

    d3 = 5.0 / 2;

    d4 = 5   / 2.0;
    cout << "n1 = " << n1 << endl;

    cout << "n2 = " << n2 << endl;

    cout << "n3 = " << n3 << endl;

    cout << "n4 = " << n4 << endl;
    cout << endl;
    cout << "d1 = " << d1 << endl;

    cout << "d2 = " << d2 << endl;

    cout << "d3 = " << d3 << endl;

    cout << "d4 = " << d4 << endl;
    cout << endl;
    cout << "d1 = " << showpoint << d1 << endl;

    cout << "d2 = " << d2 << endl;

    cout << "d3 = " << d3 << endl;

    cout << "d4 = " << d4 << endl;
    return 0;

}

実行結果



T:\>lesson012\Project1.exe

n1 = 2

n2 = 2

n3 = 2

n4 = 2
d1 = 2

d2 = 2.5

d3 = 2.5

d4 = 2.5
d1 = 2.00000

d2 = 2.50000

d3 = 2.50000

d4 = 2.50000