代码:

#include "stdafx.h"

int _tmain(int argc, _TCHAR* argv[])
{
int amount;

do{  
    printf("Enter a dollar amount:");  
    scanf("%d",&amount);

    int twenty=amount/;  
    printf("$20 bills:%d\\n",twenty);

    int ten=(amount-\*twenty)/;  
    printf("$10 bills:%d\\n",ten);

    int five=(amount-\*twenty-\*ten)/;  
    printf("$5 bills:%d\\n",five);

    int one=amount % ;  
    printf("$1 bills:%d\\n",one);  
}while(amount!=);

return ;  

}

输出：

Enter a dollar amount:
$ bills:
$ bills:
$ bills:
$ bills:
Enter a dollar amount:
$ bills:
$ bills:
$ bills:
$ bills:
Enter a dollar amount:
$ bills:
$ bills:
$ bills:
$ bills:
Enter a dollar amount:
$ bills:
$ bills:
$ bills:
$ bills:

--2020年6月9日--