c - “new_dollars =美元+美分/100”无变化

在输出中，new_dollars始终显示美元数，因此我不知道如何解决该问题。请帮助我找出问题所在。

int main(void)
{
    int dollars, cents, count, new_dollars;

    for ( count = 1; count <= 10; ++count){
        printf ("Enter dollars: ");
        scanf ("%i", &dollars);

        printf ("Enter cents: ");
        scanf ("%i", &cents);

        if ( cents >= 100 ){
            cents = cents % 100;
            new_dollars = dollars + cents / 100;
            printf ("%i\n", new_dollars);
            printf ("$%i.%2i\n\n", new_dollars, cents);
        }
        else {
            printf ("$%i.%2i\n\n", dollars, cents);
        }
    }

    return 0;
}

最佳答案

评论者对整数除法是正确的。尝试此操作，它交换执行计算的两行顺序，因此cents在需要时仍将具有有用的值：

int main(void)
{
    int dollars, cents, count, new_dollars;

    for ( count = 1; count <= 10; ++count){
        printf ("Enter dollars: ");
        scanf ("%i", &dollars);

        printf ("Enter cents: ");
        scanf ("%i", &cents);

        if ( cents >= 100 ){
            new_dollars = dollars + cents / 100;
            cents = cents % 100;
            printf ("%i\n", new_dollars);
            printf ("$%i.%2i\n\n", new_dollars, cents);
        }
        else {
            printf ("$%i.%2i\n\n", dollars, cents);
        }
    }

    return 0;
}