问在使用C++时面临“对二进制表达式('float‘和’float‘)无效的操作数

EN

#include <stdio.h>
#include <cs50.h>
#include <math.h>

int main(){
    float owe_in_dollars;
    float owe_in_cent;
    int coin_count = 0;
    do
    {
    owe_in_dollars = get_float("Change: ");
    }while(owe_in_dollars<0);
    owe_in_cent = (int)(owe_in_dollars*100);
    if (owe_in_cent%(int)25 > 0){
       coin_count++;
    }
    printf("%i", coin_count);
}